RUS  ENG JOURNALS   PEOPLE   ORGANISATIONS   CONFERENCES   SEMINARS   VIDEO LIBRARY   PACKAGE AMSBIB
General information
Latest issue
Archive

Search papers
Search references

RSS
Latest issue
Current issues
Archive issues
What is RSS



Dokl. Akad. Nauk:
Year:
Volume:
Issue:
Page:
Find






Personal entry:
Login:
Password:
Save password
Enter
Forgotten password?
Register

Archive

| table | by volume |

 Author Index

 Dokl. Akad. Nauk SSSR, Volume 112 (1957)

 Dokl. Akad. Nauk SSSR, Volume 113 (1957)

 Dokl. Akad. Nauk SSSR, Volume 114 (1957)

 Dokl. Akad. Nauk SSSR, Volume 115 (1957)

 Dokl. Akad. Nauk SSSR, Volume 116 (1957)

 Dokl. Akad. Nauk SSSR, Volume 117 (1957)

 Dokl. Akad. Nauk SSSR, Volume 118 (1958)

 Dokl. Akad. Nauk SSSR, Volume 119 (1958)

 Dokl. Akad. Nauk SSSR, Volume 120 (1958)

 Dokl. Akad. Nauk SSSR, Volume 121 (1958)

 Dokl. Akad. Nauk SSSR, Volume 122 (1958)

 Dokl. Akad. Nauk SSSR, Volume 123 (1958)

 Dokl. Akad. Nauk SSSR, Volume 130 (1960)

 Dokl. Akad. Nauk SSSR, Volume 131 (1960)

 Dokl. Akad. Nauk SSSR, Volume 132 (1960)

 Dokl. Akad. Nauk SSSR, Volume 133 (1960)

 Dokl. Akad. Nauk SSSR, Volume 134 (1960)

 Dokl. Akad. Nauk SSSR, Volume 135 (1960)

 Dokl. Akad. Nauk SSSR, Volume 136 (1961)

 Dokl. Akad. Nauk SSSR, Volume 137 (1961)

 Dokl. Akad. Nauk SSSR, Volume 138 (1961)

Dokl. Akad. Nauk SSSR, Volume 139 (1961)

Number 1
MATHEMATICS
Qualitative integration of a system of $n$ differential equations in a region containing a singular point and a limit cycle
N. N. Brushlinskaya
9
Additive functionals on a multi-dimensional Wiener process
A. D. Venttsel'
13
Solutions of partial differential equations with constant coefficients
V. V. Grushin
17
A limit theorem
V. Yu. Krylov
20
On $V^n$ continua
V. Kuz'minov
24
Approximation of functions by generalized linear Landau operators
R. G. Mamedov
28
Determination of the capture region for a system close to Hamiltonian
V. Mel'nikov
31
Some problems in the theory of homogeneous Markov processes with discrete time
S. V. Nagaev
34
Elliptic operators on two-dimensional manifolds
M. Z. Solomyak
37
Necessary and sufficient conditions for the stability of a system of difference equations
V. Ya. Urm
40
A method for determining the constants in the Christoffel–Schwarz integral
P. F. Fil'chakov
44
The real and imaginary parts of an unbounded operator
È. R. Tsekanovskii
48
Extensions of the indexial of a finite group
S. A. Chunikhin
52
The structure of the functional space of complex canonical equations with periodic coefficients
V. A. Yakubovich
54

FLUID MECHANICS
Vortex and circulation conservation in magnetohydrodynamics
M. N. Kogan
58
Resistance of polymeric plastics to erosion by cavitation
K. K. Shal'nev
60

THEORY OF ELASTICITY
Some nonlinear boundary value problems in the theory of a Maxwellian body
B. M. Naimark
63

MATHEMATICAL PHYSICS
The propagation of long and ultra-long radio waves about the earth in the lower ($C$, $D$, and $E$) layers of the ionosphere in the light of information theory
P. E. Krasnushkin
67

PHYSICS
On the problem of the state of a gas moving near a solid surface
S. P. Bakanov, B. V. Deryagin
71
The coefficient of quadrupole absorption and the optical life time of the ground state of excitons in a $\mathrm{Cu}_2\mathrm{O}$ crystal
E. F. Gross, A. A. Kaplyanskii
75
The matrix element of the reaction $\pi+\mathrm{N}\to\pi+\pi+\mathrm{N}$ at low energies
O. I. Zavialov, V. P. Pavlov
79

GEOPHYSICS
Fay's gravitational anomalies and the isostasy
B. A. Andreev
91

CHEMISTRY
Thermal condensation of dichlorosilane with chlorobenzene
K. A. Andrianov, V. I. Savushkina, S. A. Golubtsov, B. A. Charskaya
95
The oxidation of $n$-butane in the gaseous and liquid phases
È. A. Blyumberg, G. E. Zaikov, N. M. Emanuel'
99
Intermolecular interaction between tetrahydrofuran and hydrogen chloride
Yu. G. Borod'ko, Ya. K. Syrkin
102
Condensation of formaldehyde with perfluorolefines – tetrafluorethylene, hexafluoropropylene and trifluorochlorethylene
B. L. Dyatkin, E. P. Mochalina, I. L. Knuniants
106
“Thermal” regrouping of hydrazo compounds
L. G. Krolik, V. O. Lukashevich
110
The tri-$n$-aminotriphenyloxonium cation as a structural analogue of parafuchsin
A. N. Nesmeyanov, T. P. Tolstaya, A. V. Gribanov
114
An investigation of the lead selenite – lead oxide system
B. A. Popovkin, A. V. Novoselova
117
The use of spectrophotometry in the study of the composition- and structure of chloride complexes of cobalt
I. V. Tananaev, B. F. Dzhurinsky
120
An investigation into the alkylation of aromatic hydrocarbons
A. V. Topchiev, M. V. Kurashev, I. F. Gavrilenko
124
Imination of 2-substituted indandiones-1,3
Ya. F. Freimanis, G. Ya Vanag
128
Alkylation of tetrahydrofuran by ethylene
N. I. Shuykin, B. L. Lebedev
131

PHYSICAL CHEMISTRY
The life time of unbasic current carriers as influenced by the oxygen adsorbed on germanium surface
R. Kh. Burshtein, S. I. Sergeev
134
Detonation of nitromethane-metone mixtures
A. N. Dremin, O. K. Rozanov
137
Determination of relative adsorption coefficients by isotopic dilution
G. V. Isagulyants, A. A. Balandin, E. I. Popov
139
The photocatalytic action of $\mathrm{ZnO}$ and $\mathrm{TiO}_2$ in the reactions involving the liberation of oxygen
A. A. Krasnovskii, G. P. Brin
142
Paper chromatography, of diaryl organotin compounds and its use in studying the products of reaction between unsymmetric diaryliodonium salts and tin dichloride
O. A. Reutov, O. A. Ptitsyna, M. F. Turchinskii
146
Heats of wetting aluminium oxide by $n$-heptane solutions of benzene, cyclohexane and cyclohexene
I. V. Smirnova, A. A. Kubasov, K. V. Topchieva
150
The effect of acidity on the yield of chemical radiation reactions
V. N. Shubin, P. I. Dolin
154


D. A. Bochvar, I. V. Stankevich, A. L. Chistyakov
8

Number 2

MATHEMATICS
The domains of variation of the coefficient domains of functions representable as sums of Stieltjes integrals
Yu. E. Alenitsyn
263
Solvability of a type of non-linear boundary-value problem
G. V. Arzhanov
267
A Phragmén–Lindelöf theorem for a linear elliptic system
I. S. Arshon
271
The simulation of linear, optimal high-speed operations by relay circuits
V. G. Boltyanskii
275
Properties of $n$-dimensional singular integrals in the space $L_p(S;\rho)$
T. G. Gegelia
279
On majorant equations
A. E. Gel'man
283
On infinite dimensional spaces
B. Levshenko
286
A problem generalizing Carleman's boundary-value problem
G. S. Litvinchuk
290
A boundary value problem of linear conjugation
L. G. Mikhailov
294
Certain homogeneous boundary-value problems for differential operators with constant coefficients
S. G. Ovsepyan
298
Boundedness of solutions of certain non-linear third-order differential equations
V. A. Pliss
302
Conditions for the correctness of one-dimensional mixed problems
M. L. Rasulov
305
On statement calculi with an additional operation
Ya. S. Smetanich
309
A method of investigating linear systems of differential equations with quasi-periodic coefficients
V. Kh. Kharasakhal
313
Some families of extensions of a symmetric operator
A. V. Strauss
316

CYBERNETICS AND THE REGULATION THEORY
On the power of networks of functional elements
M. N. Vaintsvaig
320
Generalizing the invariance principle to linear automatic systems with variable parameters
V. A. Vasilenko
324

MECHANICS
The motion of a gyroscope in a Cardan suspension when there is a moment with respect to the axis of natural rotation
S. A. Kharlamov
327

FLUID MECHANICS
Energy spectrum of an incompressible fluid in turblent flow
E. A. Novikov
331
The boundary of the region of existence of optimal nozzles free of shock waves
L. E. Sternin
335

THEORY OF ELASTICITY
Solution of axially symmetrical problems in theory of elasticity by means of analytic functions
A. Ya. Aleksandrov
337
Asymptotic treatment of the equations for large bending of a symmetrically loaded circular plate
L. S. Srubshchik, V. I. Yudovich
341

PHYSICS
The problem of the Fermion mass in the $\gamma^5$-invariant model of quantum field theory
B. A. Arbuzov, A. N. Tavkhelidze, R. N. Faustov
345
Action spheres of quenching in the case of energy transfer between triplet layers
V. L. Ermolaev
348
On the probability of transformation of the vibratory energy of oxygen in collision with a nitrogen dioxide molecule
A. I. Osipov
351
Anisotropic scattering of electron on ionized impurities
A. G. Samoilovich, I. Ya. Korenblit, I. V. Dakhovskii
355

CHEMISTRY
The synthesis of $\beta$-cedrene
M. I. Goryaev, G. A. Tolstikov
363
A new method of synthesizing quinolisidine derivatives
V. I. Gunar, S. I. Zav'yalov
367
The $o$-$(2,3 (\mathrm{CO}), 6,5 (\mathrm{CO})$-dibenzoyleneisonicotinoyl) benzoic acid
G. Ya. Doubur, G. Ya Vanag
369
Absorption spectra of diphenylmethane and diphenylethane derivatives containing nitro and amino groups in the different nuclei
V. A. Izmailsky, V. A. Glushenkov
373
Hydrogenation of $\alpha$-ketoacids over a colloidal palladium catalyst
E. I. Klabunovskii, A. A. Balandin, Yu. I. Petrov
377
Transformations of isopropenyl cyclopropane in the presence of kieselguhr
M. Yu. Lukina, S. V. Zotova, M. A. Markov, V. A. Ovodova, B. A. Kazanskii
381
Reactions of diborane and alkyldiboranes with boric and alkylboric acid esters and their thioanalogues
B. M. Mikhailov, L. S. Vasil'ev
385
Isotopic exchange reaction between benzylmercury bromides and mercuric bromide labelled with the $\mathrm{Hg}^{203}$ radioactive isotope
O. A. Reutov, T. A. Smolina, V. A. Kalavin
389
Metal dialkyldithiophosphates as antioxidizers
P. I. Sanin, V. V. Sher, L. F. Chernyavskaya, N. V. Melent'eva
393
$\alpha$-Furylnitroethylene, its synthesis and ability of polymerization
A. V. Topchiev, V. P. Alaniya, V. A. Soprano
396

PHYSICAL CHEMISTRY
The specific heat of water and steam at high temperatures and high pressures
Kh. I. Amirkhanov, A. M. Kerimov
398
Photoreduction and demethylation of thiazine dyes on silicon ash
Kh. L. Arvan, G. A. Korsunovskii, S. Yu. Lebedev
402
Oxidation and reduction of the radiolysis of organic compounds by radical products
V. A. Larin, N. A. Bakh
406
The conversion of the oxidative component of radiolysis in the nitrate – water system
M. A. Proskurnin, V. A. Sharpatyi, V. I. Smirnova, N. M. Pomerantsev, G. N. Kuzmintseva, T. A. Simonova
410
On the mechanism underlying the origin and development of pitting corrosion on spotless steel
I. L. Rozenfel'd, I. S. Danilov
414
Dipole moments of certain imides and diphenylcyclopropenone
A. N. Shidlovskaya, Ya. K. Syrkin
418
On the proof of the impossibility to bring about strong deflagrations and weak detonations
K. I. Shchelkin
420

Number 3

MATHEMATICS
An interesting class of quasi-linear systems
S. K. Godunov
521
Certain conditions for the smoothness of a function of several variables and estimates of convolution operators
K. K. Golovkin
524
The order of the best approximation by linear combinations of elements of an extended basis to functions defined on a continuum
M. M. Dragilev
528
The behavior as $t\to\infty$ of solutions of a problem of S. L. Sobolev
T. I. Zelenyak
531
A new numerical scheme of the algorithm for Čebyšev approximation of an incompatible system of linear equations and a system of linear inequalities
S. I. Zukhovitskii
534
Coordinate frames of submanifolds in the theory of pairs of complexes in $P_3$
E. T. Ivlev
538
A two-point boundary-value problem for a non-linear second-order differential equation and mean-value theorems
G. A. Kamenskii
541
A boundary-value problem for linear and quasi-linear parabolic equations
O. A. Ladyzhenskaya, N. N. Ural'tseva
544
A class of completely continuous operators
V. I. Matsaev
548
Elliptic equations with singular coefficients
L. G. Mikhailov
552

CYBERNETICS AND THE REGULATION THEORY
On the integration of potential-pulse forms
V. G. Lazarev, E. I. Piil'
556
Alphabetic coding
Al. A. Markov
560
On the transformation of programs for the solution of complicated logical problems to optimal form
S. N. Razumovskii
562
The realization of monotonic functions by means of networks consisting of functional elements
V. I. Reznik
566
The effect of random interference on a periodic state in relay automatic systems
Ya. Z. Tsypkin
570

MECHANICS
One version of the regular precession of a solid with a liquid-filled cavity
M. P. Gulyaev
574

THE MECHANICS OF CONTINUOUS MEDIUM
An investigation of the plastic deformation of a metal having some deformation anizotropy created by preliminary loading
I. N. Izotov, Yu. I. Jagn
576

THEORY OF ELASTICITY
The system of equations arising in the investigation of the bending of a circular prismatic beam with a non-axial elliptical hole
Yu. A. Amenzade
580

PHYSICS
Variation of the electric resistance of praseodymium, dysprosium, erbium and ytterbium at high pressures up to 250 000 kG/cm$^2$
L. F. Vereshchagin, A. A. Semerchan, S. V. Popova
585
Fluctuations of electron density in the ionosphere
E. A. Novikov
587
One-dimensional flow of an ultrarelativistic gas
K. P. Stanyukovich
590

CHEMISTRY
Heminal diindandionylalkanes
L. S. Geita, G. Ya. Vanag
597
Spectrum measurement in mixed solvents the on base of alkane for studying interaction of the solute substance with the solvent
V. A. Izmailsky, M. A. Mostoslavskii
601
Polymerization of acetonitryl and other nitryls
V. A. Kargin, V. A. Kabanov, V. P. Zubov, A. B. Zezin
605
Thin-layer chromatography of cerebrosides
N. K. Kochetkov, I. G. Zhukova, I. S. Glukhoded
608
The homologous series of uranium oxides, $\mathrm{U}_n\mathrm{O}_{2n+2}$
E. S. Makarov
612
An investigation of the thermodynamic properties of cerium – lead, praseodymium – lead and neodymium – lead alloys
P. P. Otopkov, Ya. I. Gerasimov, A. M. Evseev
616
Enquiry into the domain of multicomponent nickel systems
L. I. Pryakhina
618
A new procedure for the production of trichloromethyl organomercury compounds
O. A. Reutov, A. N. Lovtsova
622
Chemosorption of isopropyl alcohol on mixed $\gamma$-$\mathrm{Al}_2\mathrm{O}_3$-based catalysts
A. M. Rubinshtein, K. I. Slovetskaya, T. R. Brueva
626
The nature of green light emission and the composition of the products obtained by burning boron at 3100$^\circ$ 
A. D. Rusin, V. M. Tatevskii
630
Catalytic hydration of esters
N. I. Shuykin, I. F. Bel'skii, V. M. Shostakovskii
634

PHYSICAL CHEMISTRY
Certain features in the initiation of gray tin centres on $\mathrm{CdTe}$, $\mathrm{InSb}$, $\mathrm{Si}$ and $\mathrm{Ge}$ particles
A. I. Bykhovskii
637
The interaction of oxygen with the anions adsorbed on platinum from solution
V. E. Kazarinov, N. A. Balashova
641
Experimental determination of the enthalpy of molybdenum in the $700-2337^\circ$ C range
V. A. Kirillin, A. E. Sheindlin, V. Ya. Chekhovskoi
645
Chemical exchange reactions in solid phases and the contact between the reacting particles of solids
M. M. Pavlyuchenko, M. P. Gilevich
648
On the nature and strength of cross linkages in radiation vulcanized polysiloxane rubbers
I. Ya. Poddubnyi, S. V. Aver'yanov, L. A. Aver'yanova
651
The radioactivity of molybdenum anhydride as affecting the rate of evaporation of this compound
Vikt. I. Spitsyn, I. E. Zimakov
654
The effects of fluorescence quenchers on the fluorescence spectra of the solutions formed by certain anthracene and phthalimide derivatives in mixed solvents
A. S. Cherkasov
658
The $I^{1/2}$ law on radiolytic oxidation of Iron ions and the mechanism of this process
B. V. Èrschler, V. G. Firsov
662


A. N. Rodionov, T. V. Talalaeva, D. N. Shigorin, K. A. Kocheshkov
520

A. L. Zel'manov
520


G. Èskin, R. Ismagilov, M. S. Livshits
520

Number 4

MATHEMATICS
Projection in a Hilbert space with bilinear metric
Yu. P. Ginzburg
775
Volterra operators with imaginary component in one class or another
I. Ts. Gokhberg, M. G. Krein
779
Some supplements to the algorithm for the solution of a generalized linear programming problem
S. I. Zukhovitskii
783
Edge vertex functions and the distributive properties of graphs
A. A. Zykov
787
Regular and projectively complete linear manifolds in spaces with a general Hermitian bilinear metric
I. S. Iokhvidov
791
Conditions for solvability of a certain boundary-value problem for a parabolic system
E. I. Kim, L. P. Ivanova
795
Boundary-value problems with conditions at $\pm\infty$
Yu. A. Klokov
799
Effective inseparability of a set of identically true formulae from a set of finitely refutable ones in some elementary theories
A. I. Mal'tsev
802
Diophantine equations over functional fields
Yu. I. Manin
806
Volterra operators obtained from self-adjoint operators by perturbation
V. I. Matsaev
810
Densenesses of hyperimmune sets
E. A. Pavlova
814
On the isometric immersion of a two-dimensional Riemannian manifold homeomorphic to a sphere into a three-dimensional Riemannian space
A. V. Pogorelov
818
Evaluation of multiple integrals
I. M. Sobol'
821
Boundary value problems for quasi-linear elliptic equations with power nonlinearities
T. B. Solomyak
824

CYBERNETICS AND THE REGULATION THEORY
Concerning the structural stability of a class of closed dynamic systems
M. V. Meerov
827
Certain problems in the behavior of finite automata
M. L. Tsetlin
830
The theory of pulse automatic systems with amplitude-pulse modulation of the second kind
Ya. Z. Tsypkin
834

MECHANICS
On the theory of four-bar chains with two sliding pairs
I. I. Artobolevsky
838

PHYSICS
Symmetry of a molecule, fusion of a crystal and the ordered arrangement of a liquid
Ya. B. Zel'dovich
841
The distribution of electron density among $3d$-shell electrons which account for the ferromagnetism of nickel, cobalt and iron
N. N. Sirota, N. M. Olekhnovich
844
The principal properties of a superfluid nucleus model
V. G. Solov'ev
847
The method of quantum Green functions in the theory of optical bands in crystals
S. V. Tyablikov, V. A. Moskalenko
851

HEAT ENGINEERING
The effect of non-uniform heating along a pipe on the value of critical heat flows
M. A. Styrikovich, Z. L. Miropol'skii, Shen Zhao-yuan
859

CHEMISTRY
The thermodynamic properties of $\mathrm{Ag}$$\mathrm{Sb}$ melts
A. A. Vecher, Ya. I. Gerasimov
863
2-Phenyl-4, 5, 6,7-tetrahydroindandione-1,3
G. Ya. Vanag, È. Ya. Gren
866
The mechanism of cyclohexene and cyclohexadiene-1,3 transformation on platinum films
V. M. Gryaznov, V. I. Shimulis
870
Large microscopic formations in polypropylene crystals
V. A. Kargin, G. P. Andrianova
874
Reaction of ethylenimine with carbonyl compounds
R. G. Kostyanovsky
877
Dissociation heat of Kurnakov's compounds $\mathrm{Ni}_3\mathrm{Fe}$, $\mathrm{Ni}_3\mathrm{Mn}$, $\mathrm{Ni}_3\mathrm{Cr}$ and $\mathrm{Ni}_3\mathrm{V}$
I. I. Kornilov, N. M. Matveeva
880
The polymeric nature of the $5/6$ basic aluminium chloride and the possibility of a higher basicity in aluminium oxychlorides
È. A. Levitskii, V. N. Maksimov, I. Yu. Marchenko
884
The properties of phenylferrocene
A. N. Nesmeyanov, È. G. Perevalova, S. P. Gubin, T. V. Nikitina, A. A. Ponomarenko, L. S. Shilovtseva
888
An investigation of the $\mathrm{KF}$$\mathrm{ZrF}_4$ system
A. V. Novoselova, Yu. M. Korenev, Yu. P. Simanov
892
The equilibrium diagram of iron – hafnium
V. N. Svechnikov, A. K. Shurin
895
The polymerization of styrene, butadiene and isoprene, initiated by lithium – ethyl in various media
Yu. L. Spirin, D. K. Polyakov, A. R. Gantmakher, S. S. Medvedev
899
The production and some properties of metallic scandium
Vikt. I. Spitsyn, L. N. Komissarova, A. A. Men'kov
903
Sorption of germanium on aluminium hydroxide
I. V. Tananaev, M. Ya. Shpirt, T. I. Sendul'skaya
907
Acetate complexes of titanium
S. Ya. Shnaiderman, I. E. Kalinichenko
910
The synthesis and some transformations of silanols in the vinyl acetylene series
M. F. Shostakovskii, N. V. Komarov, Yu. V. Maroshin
913

PHYSICAL CHEMISTRY
Separation of free radicals by paper chromatography
A. L. Buchachenko, M. B. Neiman
916
The influence of phosphates and polyphosphates on the solubilizing ability of detergents
P. A. Demchenko, A. V. Dumanskii
919
The effect of the solvent on ionic and ion-molecular reactions
Yu. A. Ershov
922
Faraday impedance for reversible electrode processes following the scheme of catalytic evolution of hydrogen
V. G. Levich, B. I. Khaikin, V. A. Kir'yanov
925
Scattering of light and the stability of solutions
L. I. Lisnianskii
929
Crystal growth according to Chokhralsky as affected by the supercooling of the melt
D. A. Petrov, A. A. Bukhanova
933
The effect of sodium hydroxide solution on the absorption band of the hydroxyls of certain silicates
I. N. Plaksin, V. I. Solnyshkin
936
The influence of temperature on the optical absorption of polycrystalline cadmium sulphide layers
K. V. Shalimova, N. V. Pirogova
938

Number 5

MATHEMATICS
Indicator of a function subharmonic in $n$-dimensional space
V. S. Azarin
1033
On translation surfaces of constant curvature
Ya. P. Blank
1037
The theory of a hypersurface in four-dimensional non-Euclidean spaces
R. M. Geidel'man
1040
The form of extremal functions of a certain class, of least deviation from zero with several linear relations in the coefficients
I. A. Grigor'eva
1044
The solution of boundary-value problems for a parabolic equation with discontinuous coefficients
L. I. Kamynin
1048
The Green's $E$-function of a Beltrami operator and some variational problems
P. I. Lizorkin
1052
On the regularity of a convex surface with a regular metric in Euclidean space
A. V. Pogorelov
1056
Modules over a $K$-space
S. N. Slugin
1059
An iteration process with minimum errors for a nonlinear operator equation
V. M. Fridman
1063
The reducibility of a continuous function of a real variable and the structure of the stationary points of the corresponding iteration process
A. N. Sharkovskii
1067

CYBERNETICS AND THE REGULATION THEORY
Functional possibilities and synthesis of threshold elements
V. I. Varshavskii
1071
Proof that a minimum number of contacts are required in the realization of a class of Boolean functions of $n$ variables
Yu. L. Sagalovich
1075

MECHANICS
Linear connecting rod envelopes with a sliding pair
I. I. Artobolevsky
1077

PHYSICS
The mechanism of radiolysis inhibition
A. M. Brodskii, Yu. A. Kolbanovskii
1081
Anomalous absorption of light by admixture near the excition bands of molecular crystals
V. L. Broude, É. I. Rashba, E. F. Sheka
1085
On the construction of the scattering matrix in nonlocal theories
V. D. Kukin, A. R. Frenkin
1089

GEOPHYSICS
Fluctuations of radioecho from sediments as related to their microstructure
A. G. Gorelik, G. A. Smirnova
1098

CHEMISTRY
Rhenium as a catalyst of hydrogenation
A. A. Balandin, E. I. Karpeiskaya, B. D. Polkovnikov
1101
Reduction of $\mathrm{CuFeO}_2$ by graphite
V. N. Bogoslovskii, N. M. Stafeeva, G. I. Chufarov
1105
The structure of the salts of diphenylcyclopropenone and tropone
B. E. Zaitsev, Yu. D. Koreshkov, M. E. Vol'pin, Yu. N. Sheinker
1107
The magnetic susceptibility of chelate compounds of vanadyl with tridentate ligands
V. V. Zelentsov
1110
Separation of quaternary arsonium compounds into optical antipodes by asymmetric adsorption on natural dissymmetric adsorbents
G. H. Kamai, E. I. Klabunovskii, Yu. F. Gatilov, G. S. Khodakov
1112
The mechanism of formation of carbonyl compounds and acids in emulsion oxidation of isopropylbenzene
R. V. Kucher, S. D. Kaz'min
1114
1,1'-bisacylperoxy-dicyclohexyl peroxides
Yu. A. Oldekop, K. L. Moiseichuk, A. N. Sevchenko, I. P. Zyatkov
1117
The structure of $\delta$-ketone acids
Yu. A. Pentin, I. S. Trubnikov, R. B. Teplinskaya, N. P. Shusherina, R. Ya. Levina
1121
Addition of triphenylmethyl radicals to enin hydrocarbons and silicon hydrocarbons
A. A. Petrov, M. D. Stadnichuk, Yu. I. Kheruze
1124
Decomposition of cumene hydroperoxide in the presence of cation exchange resin KY-2
G. A. Razuvaev, V. A. Shushunov, V. A. Yablokov
1128
A study of the kinetics of acidic hydrolysis of certain phenol and chlorophenol glycosides
B. N. Stepanenko, O. G. Serdyuk
1132
Diselenides of molybdenum and rhenium
Yu. M. Ukrainsky, A. V. Novoselova
1136
Enquiry into the synthesis and transformations of unsaturated organosilicon compounds
I. A. Shikhiev, M. I. Aliev, B. M. Guseynzade
1138

PHYSICAL CHEMISTRY
Determination of the recombination coefficient for oxygen atoms on the surface of quartz covered with potassium tetraborate
N. I. Gorban, V. V. Azatyan, A. B. Nalbandyan
1141
Thermodynamic statistical calculation of adsorption equilibrium for benzene on graphite
A. V. Kiselev, D. P. Poshkus
1145
On the crystallization of cellulose tribenzoate
P. V. Kozlov, O. P. Kozmina, Wang Nai-chan, P. A. Slavetskaya, Zhou En-lo
1149
On the theory of anode solution of silicon
V. A. Myamlin
1153
Interaction between a weak entropy wave and the flame front
S. S. Novikov, Yu. S. Ryazantsev
1157
The fine structure of absorption spectra of polycrystalline $\mathrm{CdS}$ films
N. V. Pirogova
1159
An electron microscope investigation of the effect of radioactive radiation from solids on the structure of their surface
Vikt. I. Spitsyn, L. I. Zemlyanova, I. E. Mikhailenko, V. V. Gromov, I. E. Zimakov
1163
Chemical and physical adsorption of oxygen on freshly split graphite surface
G. G. Fedorov, Yu. A. Zarifyants, V. F. Kiselev
1166

Number 6

MATHEMATICS
$n$-dimensional surfaces bearing a net of conjugate lines
M. A. Akivis
1279
Some examples of automorphism groups
V. G. Vilyatser
1283
Some estimates concerning algebraic hypersurfaces and derivatives of rational functions
E. P. Dolzhenko
1287
Description of all irreducible representations of an arbitrary connected Lie group
D. P. Zhelobenko
1291
A relationship criterion for two Banach spaces
S. G. Krein, Yu. I. Petunin
1295
Klein spaces as Kawaguchi spaces
M. V. Losik
1299
Complexity of schemes in certain bases containing nontrivial elements with zero weights
É. I. Nechiporuk
1302
Properties of solutions of elliptic equations
A. A. Novruzov
1304
Uniqueness of the solution to the inverse problem of the metaharmonic potential
A. I. Prilepko
1308
Imbedding of a $k$-dimensional element in $E^n$
A. B. Sosinskii
1311
Solution of linear programming problems by the method of elimination of unknowns
S. N. Chernikov
1314
Periodic solutions of boundary-value problems without initial conditions for quasi-linear parabolic equations
I. I. Shmulev
1318
Convergence of difference schemes for the heat equation with variable coefficients
N. N. Yanenko, Yu. E. Boyarintsev
1322

CYBERNETICS AND THE REGULATION THEORY
On the complexity of networks with depth two formulated from threshold elements
V. I. Varshavskii
1325
Finite index algorithms for the simplification of disjunctive normal forms
Yu. I. Zhuravlev
1329
The algebra of potential-pulse objects
A. D. Talantsev
1332

MECHANICS
Linear connecting rod envelopes of the four-bar chain of the ellipsograph
I. I. Artobolevsky
1336

PHYSICS
Electric current in gamma-rayed dielectrics
B. M. Vul
1339
Transverse refraction index of a plasma in the neighbourhood of cyclotron frequencies and their harmonics
V. P. Demidov
1342
Determination of Curie temperature for the $\mathrm{BiFeO}_3$ ferroelectric
S. A. Fedulov
1345

CRYSTALLOGRAPHY
Electron diffraction study of poly-$\gamma$-methyl-$L$-glutamate
B. K. Vaĭnshteĭn, L. I. Tatarinova
1347

CHEMISTRY
Anion polymerization in the presence of aromatic compounds
A. A. Arest-Yakubovich, A. R. Gantmakher, S. S. Medvedev
1351
Solubility of nitrogen in liquid manganese
I. B. Baratashvili, V. P. Fedotov, A. M. Samarin, V. M. Berezhiani
1354
A new method of synthesizing macrocyclic ketones with musky odor
L. I. Belen'kii, S. Z. Taits, Ya. L. Gol'dfarb
1356
Oxymethylation of phosphine and its derivatives
E. I. Grinshtein, A. B. Bruker, L. Z. Soborovskii
1359
New syntheses of $C$-substituted carbohydrates
Yu. A. Zhdanov, G. A. Korolchenko
1363
Arvlalkylation of anisol by styrene and $\alpha$-methylstyrene in the presence of $\mathrm{BF}_3\cdot\mathrm{H}_3\mathrm{PO}_4$ and $\mathrm{BF}_3\cdot\mathrm{O}(\mathrm{C}_2\mathrm{H}_5)_2$
S. V. Zavgorodnii, È. V. Alisova
1367
The polymorphism of crystalline polypropylene
V. A. Kargin, I. I. Gorina
1371
Polyacrolein complexes with salts of heavy metals
M. M. Koton, I. V. Andreeva, P. F. Andreev, È. M. Rogozina
1372
Organotin and organolead derivatives of nitrogen-containing acids
D. A. Kochkin, S. G. Verenikina, I. B. Chekmareva
1375
The synthesis of certain compounds having two neighbouring three-member cycles
A. P. Meshcheryakov, I. E. Dolgii
1379
New method of synthesizing chloranhydrides and bromanhydrides of aromatic acids
Yu. A. Oldekop, A. M. Kalinina, S. A. Shklyar
1383
The sequence of reactions in the hydrogenation of 2,3-demethylbutadiene-1,3 on a skeleton nickel catalyst
L. Kh. Freidlin, E. F. Litvin, Yu. Yu. Kaup
1386
Thermal conductivity and viscosity of zirconium tetrachloride and hafnium tetrachloride vapours in the $300-700^\circ$ C range
V. I. Tsirel'nikov, L. N. Komissarova, Vikt. I. Spitsyn
1389

PHYSICAL CHEMISTRY
An investigation of the structure of nitro-amino-butadiene derivatives by means of Raman spectra
Ya. S. Bobovich, S. M. Kvitko, V. V. Perekalin
1392
The kinetics of cyclohexene oxidation by palladium salts in aqueous solutions
M. N. Vargaftik, I. I. Moiseev, Ya. K. Syrkin
1396
The effect of dissolved form builders on the formation of specific adsorptive properties in silica gels
Z. Z. Vysotsky, L. F. Divnich, M. V. Polyakov
1400
The effect of tanning substances on the structure of gelatine solutions
N. V. Grigor'eva, V. A. Pchelin, P. A. Rebinder
1403
Thermodynamic properties of cerium oxides
F. A. Kuznetsov, V. I. Belyi, T. N. Rezukhina, Ya. I. Gerasimov
1405
The possibility to use the paramagnetic electron resonance method for record of active centres in the liquid-phase oxidation of hydrocarbons
Ya. S. Lebedev, V. F. Tsepalov, V. Ya. Shlyapintokh
1409
Reflection spectra of polycrystalline cadmium sulphide films at $77,3^\circ$ 
N. V. Pirogova
1413
The mechanism of extraction with fatty acids of colloid precipitated ferric oxide
V. B. Tikhomirov
1416


V. I. Gusynin, V. L. Tal'roze
1278

 Dokl. Akad. Nauk SSSR, Volume 140 (1961)

 Dokl. Akad. Nauk SSSR, Volume 141 (1961)

 Dokl. Akad. Nauk SSSR, Volume 142 (1962)

 Dokl. Akad. Nauk SSSR, Volume 143 (1962)

 Dokl. Akad. Nauk SSSR, Volume 144 (1962)

 Dokl. Akad. Nauk SSSR, Volume 145 (1962)

 Dokl. Akad. Nauk SSSR, Volume 146 (1962)

 Dokl. Akad. Nauk SSSR, Volume 147 (1962)

 Dokl. Akad. Nauk SSSR, Volume 148 (1963)

 Dokl. Akad. Nauk SSSR, Volume 149 (1963)

 Dokl. Akad. Nauk SSSR, Volume 150 (1963)

 Dokl. Akad. Nauk SSSR, Volume 151 (1963)

 Dokl. Akad. Nauk SSSR, Volume 152 (1963)

 Dokl. Akad. Nauk SSSR, Volume 153 (1963)

 Dokl. Akad. Nauk SSSR, Volume 154 (1964)

 Dokl. Akad. Nauk SSSR, Volume 155 (1964)

 Dokl. Akad. Nauk SSSR, Volume 156 (1964)

 Dokl. Akad. Nauk SSSR, Volume 157 (1964)

 Dokl. Akad. Nauk SSSR, Volume 158 (1964)

 Dokl. Akad. Nauk SSSR, Volume 159 (1964)

 Dokl. Akad. Nauk SSSR, Volume 160 (1965)

 Dokl. Akad. Nauk SSSR, Volume 161 (1965)

 Dokl. Akad. Nauk SSSR, Volume 162 (1965)

 Dokl. Akad. Nauk SSSR, Volume 163 (1965)

 Dokl. Akad. Nauk SSSR, Volume 164 (1965)

 Dokl. Akad. Nauk SSSR, Volume 165 (1965)

 Dokl. Akad. Nauk SSSR, Volume 166 (1966)

 Dokl. Akad. Nauk SSSR, Volume 167 (1966)

 Dokl. Akad. Nauk SSSR, Volume 168 (1966)

 Dokl. Akad. Nauk SSSR, Volume 169 (1966)

 Dokl. Akad. Nauk SSSR, Volume 170 (1966)

 Dokl. Akad. Nauk SSSR, Volume 171 (1966)

 Dokl. Akad. Nauk SSSR, Volume 172 (1967)

 Dokl. Akad. Nauk SSSR, Volume 173 (1967)

 Dokl. Akad. Nauk SSSR, Volume 174 (1967)

 Dokl. Akad. Nauk SSSR, Volume 175 (1967)

 Dokl. Akad. Nauk SSSR, Volume 176 (1967)

 Dokl. Akad. Nauk SSSR, Volume 177 (1967)

 Dokl. Akad. Nauk SSSR, Volume 178 (1968)

 Dokl. Akad. Nauk SSSR, Volume 179 (1968)

 Dokl. Akad. Nauk SSSR, Volume 180 (1968)

 Dokl. Akad. Nauk SSSR, Volume 181 (1968)

 Dokl. Akad. Nauk SSSR, Volume 182 (1968)

 Dokl. Akad. Nauk SSSR, Volume 183 (1968)

 Dokl. Akad. Nauk SSSR, Volume 184 (1969)

 Dokl. Akad. Nauk SSSR, Volume 185 (1969)

 Dokl. Akad. Nauk SSSR, Volume 186 (1969)

 Dokl. Akad. Nauk SSSR, Volume 187 (1969)

 Dokl. Akad. Nauk SSSR, Volume 188 (1969)

 Dokl. Akad. Nauk SSSR, Volume 189 (1969)

 Dokl. Akad. Nauk SSSR, Volume 190 (1970)

 Dokl. Akad. Nauk SSSR, Volume 191 (1970)

 Dokl. Akad. Nauk SSSR, Volume 192 (1970)

 Dokl. Akad. Nauk SSSR, Volume 193 (1970)

 Dokl. Akad. Nauk SSSR, Volume 194 (1970)

 Dokl. Akad. Nauk SSSR, Volume 195 (1970)

 Dokl. Akad. Nauk SSSR, Volume 196 (1971)

 Dokl. Akad. Nauk SSSR, Volume 197 (1971)

 Dokl. Akad. Nauk SSSR, Volume 198 (1971)

 Dokl. Akad. Nauk SSSR, Volume 199 (1971)

 Dokl. Akad. Nauk SSSR, Volume 200 (1971)

 Dokl. Akad. Nauk SSSR, Volume 201 (1971)

 Dokl. Akad. Nauk SSSR, Volume 202 (1972)

 Dokl. Akad. Nauk SSSR, Volume 203 (1972)

 Dokl. Akad. Nauk SSSR, Volume 204 (1972)

 Dokl. Akad. Nauk SSSR, Volume 205 (1972)

 Dokl. Akad. Nauk SSSR, Volume 206 (1972)

 Dokl. Akad. Nauk SSSR, Volume 207 (1972)

 Dokl. Akad. Nauk SSSR, Volume 208 (1973)

 Dokl. Akad. Nauk SSSR, Volume 209 (1973)

 Dokl. Akad. Nauk SSSR, Volume 210 (1973)

 Dokl. Akad. Nauk SSSR, Volume 211 (1973)

 Dokl. Akad. Nauk SSSR, Volume 212 (1973)

 Dokl. Akad. Nauk SSSR, Volume 213 (1973)

 Dokl. Akad. Nauk SSSR, Volume 214 (1974)

 Dokl. Akad. Nauk SSSR, Volume 215 (1974)

 Dokl. Akad. Nauk SSSR, Volume 216 (1974)

 Dokl. Akad. Nauk SSSR, Volume 217 (1974)

 Dokl. Akad. Nauk SSSR, Volume 218 (1974)

 Dokl. Akad. Nauk SSSR, Volume 219 (1974)

 Dokl. Akad. Nauk SSSR, Volume 220 (1975)

 Dokl. Akad. Nauk SSSR, Volume 221 (1975)

 Dokl. Akad. Nauk SSSR, Volume 222 (1975)

 Dokl. Akad. Nauk SSSR, Volume 223 (1975)

 Dokl. Akad. Nauk SSSR, Volume 224 (1975)

 Dokl. Akad. Nauk SSSR, Volume 225 (1975)

 Dokl. Akad. Nauk SSSR, Volume 226 (1976)

 Dokl. Akad. Nauk SSSR, Volume 227 (1976)

 Dokl. Akad. Nauk SSSR, Volume 228 (1976)

 Dokl. Akad. Nauk SSSR, Volume 229 (1976)

 Dokl. Akad. Nauk SSSR, Volume 230 (1976)

 Dokl. Akad. Nauk SSSR, Volume 231 (1976)

 Dokl. Akad. Nauk SSSR, Volume 232 (1977)

 Dokl. Akad. Nauk SSSR, Volume 233 (1977)

 Dokl. Akad. Nauk SSSR, Volume 234 (1977)

 Dokl. Akad. Nauk SSSR, Volume 235 (1977)

 Dokl. Akad. Nauk SSSR, Volume 236 (1977)

 Dokl. Akad. Nauk SSSR, Volume 237 (1977)

 Dokl. Akad. Nauk SSSR, Volume 238 (1978)

 Dokl. Akad. Nauk SSSR, Volume 239 (1978)

 Dokl. Akad. Nauk SSSR, Volume 240 (1978)

 Dokl. Akad. Nauk SSSR, Volume 241 (1978)

 Dokl. Akad. Nauk SSSR, Volume 242 (1978)

 Dokl. Akad. Nauk SSSR, Volume 243 (1978)

 Dokl. Akad. Nauk SSSR, Volume 244 (1979)

 Dokl. Akad. Nauk SSSR, Volume 245 (1979)

 Dokl. Akad. Nauk SSSR, Volume 246 (1979)

 Dokl. Akad. Nauk SSSR, Volume 247 (1979)

 Dokl. Akad. Nauk SSSR, Volume 248 (1979)

 Dokl. Akad. Nauk SSSR, Volume 249 (1979)

 Dokl. Akad. Nauk SSSR, Volume 250 (1980)

 Dokl. Akad. Nauk SSSR, Volume 251 (1980)

 Dokl. Akad. Nauk SSSR, Volume 252 (1980)

 Dokl. Akad. Nauk SSSR, Volume 253 (1980)

 Dokl. Akad. Nauk SSSR, Volume 254 (1980)

 Dokl. Akad. Nauk SSSR, Volume 255 (1980)

 Dokl. Akad. Nauk SSSR, Volume 256 (1981)

 Dokl. Akad. Nauk SSSR, Volume 257 (1981)

 Dokl. Akad. Nauk SSSR, Volume 258 (1981)

 Dokl. Akad. Nauk SSSR, Volume 259 (1981)

 Dokl. Akad. Nauk SSSR, Volume 260 (1981)

 Dokl. Akad. Nauk SSSR, Volume 261 (1981)

 Dokl. Akad. Nauk SSSR, Volume 262 (1982)

 Dokl. Akad. Nauk SSSR, Volume 263 (1982)

 Dokl. Akad. Nauk SSSR, Volume 264 (1982)

 Dokl. Akad. Nauk SSSR, Volume 265 (1982)

 Dokl. Akad. Nauk SSSR, Volume 266 (1982)

 Dokl. Akad. Nauk SSSR, Volume 267 (1982)

 Dokl. Akad. Nauk SSSR, Volume 268 (1983)

 Dokl. Akad. Nauk SSSR, Volume 269 (1983)

 Dokl. Akad. Nauk SSSR, Volume 270 (1983)

 Dokl. Akad. Nauk SSSR, Volume 271 (1983)

 Dokl. Akad. Nauk SSSR, Volume 272 (1983)

 Dokl. Akad. Nauk SSSR, Volume 273 (1983)

 Dokl. Akad. Nauk SSSR, Volume 274 (1984)

 Dokl. Akad. Nauk SSSR, Volume 275 (1984)

 Dokl. Akad. Nauk SSSR, Volume 276 (1984)

 Dokl. Akad. Nauk SSSR, Volume 277 (1984)

 Dokl. Akad. Nauk SSSR, Volume 278 (1984)

 Dokl. Akad. Nauk SSSR, Volume 279 (1984)

 Dokl. Akad. Nauk SSSR, Volume 280 (1985)

 Dokl. Akad. Nauk SSSR, Volume 281 (1985)

 Dokl. Akad. Nauk SSSR, Volume 282 (1985)

 Dokl. Akad. Nauk SSSR, Volume 283 (1985)

 Dokl. Akad. Nauk SSSR, Volume 284 (1985)

 Dokl. Akad. Nauk SSSR, Volume 285 (1985)

 Dokl. Akad. Nauk SSSR, Volume 286 (1986)

 Dokl. Akad. Nauk SSSR, Volume 287 (1986)

 Dokl. Akad. Nauk SSSR, Volume 288 (1986)

 Dokl. Akad. Nauk SSSR, Volume 289 (1986)

 Dokl. Akad. Nauk SSSR, Volume 290 (1986)

 Dokl. Akad. Nauk SSSR, Volume 291 (1986)

 Dokl. Akad. Nauk SSSR, Volume 292 (1987)

 Dokl. Akad. Nauk SSSR, Volume 293 (1987)

 Dokl. Akad. Nauk SSSR, Volume 294 (1987)

 Dokl. Akad. Nauk SSSR, Volume 295 (1987)

 Dokl. Akad. Nauk SSSR, Volume 296 (1987)

 Dokl. Akad. Nauk SSSR, Volume 297 (1987)

 Dokl. Akad. Nauk SSSR, Volume 298 (1988)

 Dokl. Akad. Nauk SSSR, Volume 299 (1988)

 Dokl. Akad. Nauk SSSR, Volume 300 (1988)

 Dokl. Akad. Nauk SSSR, Volume 301 (1988)

 Dokl. Akad. Nauk SSSR, Volume 302 (1988)

 Dokl. Akad. Nauk SSSR, Volume 303 (1988)

 Dokl. Akad. Nauk SSSR, Volume 304 (1989)

 Dokl. Akad. Nauk SSSR, Volume 305 (1989)

 Dokl. Akad. Nauk SSSR, Volume 306 (1989)

 Dokl. Akad. Nauk SSSR, Volume 307 (1989)

 Dokl. Akad. Nauk SSSR, Volume 308 (1989)

 Dokl. Akad. Nauk SSSR, Volume 309 (1989)

 Dokl. Akad. Nauk SSSR, Volume 310 (1990)

 Dokl. Akad. Nauk SSSR, Volume 311 (1990)

 Dokl. Akad. Nauk SSSR, Volume 312 (1990)

 Dokl. Akad. Nauk SSSR, Volume 313 (1990)

 Dokl. Akad. Nauk SSSR, Volume 314 (1990)

 Dokl. Akad. Nauk SSSR, Volume 315 (1990)

 Dokl. Akad. Nauk SSSR, Volume 316 (1991)

 Dokl. Akad. Nauk SSSR, Volume 317 (1991)

 Dokl. Akad. Nauk SSSR, Volume 318 (1991)

 Dokl. Akad. Nauk SSSR, Volume 319 (1991)

 Dokl. Akad. Nauk SSSR, Volume 320 (1991)

 Dokl. Akad. Nauk SSSR, Volume 321 (1991)

 Dokl. Akad. Nauk, Volume 322 (1992)

 Dokl. Akad. Nauk, Volume 323 (1992)

 Dokl. Akad. Nauk, Volume 324 (1992)

 Dokl. Akad. Nauk, Volume 325 (1992)

 Dokl. Akad. Nauk, Volume 326 (1992)

 Dokl. Akad. Nauk, Volume 327 (1992)

 Dokl. Akad. Nauk, Volume 328 (1993)

 Dokl. Akad. Nauk, Volume 329 (1993)

 Dokl. Akad. Nauk, Volume 330 (1993)

 Dokl. Akad. Nauk, Volume 331 (1993)

 Dokl. Akad. Nauk, Volume 332 (1993)

 Dokl. Akad. Nauk, Volume 333 (1993)

 Dokl. Akad. Nauk, Volume 334 (1994)

 Dokl. Akad. Nauk, Volume 335 (1994)

 Dokl. Akad. Nauk, Volume 336 (1994)

 Dokl. Akad. Nauk, Volume 337 (1994)

 Dokl. Akad. Nauk, Volume 338 (1994)

 Dokl. Akad. Nauk, Volume 339 (1994)

 Dokl. Akad. Nauk, Volume 340 (1995)

 Dokl. Akad. Nauk, Volume 341 (1995)

 Dokl. Akad. Nauk, Volume 342 (1995)

 Dokl. Akad. Nauk, Volume 343 (1995)

 Dokl. Akad. Nauk, Volume 344 (1995)

 Dokl. Akad. Nauk, Volume 345 (1995)

 Dokl. Akad. Nauk, Volume 346 (1996)

 Dokl. Akad. Nauk, Volume 347 (1996)

 Dokl. Akad. Nauk, Volume 348 (1996)

 Dokl. Akad. Nauk, Volume 349 (1996)

 Dokl. Akad. Nauk, Volume 350 (1996)

 Dokl. Akad. Nauk, Volume 351 (1996)

 Dokl. Akad. Nauk, Volume 352 (1997)

 Dokl. Akad. Nauk, Volume 353 (1997)

 Dokl. Akad. Nauk, Volume 354 (1997)

 
Contact us:
 Terms of Use  Registration  Logotypes © Steklov Mathematical Institute RAS, 2020