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 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)

 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)

Number 1
MATHEMATICS
Some properties of the solutions of the first boundary value problem for parabolic equations with discontinuous coefficients
Yu. A. Alkhutov, I. T. Mamedov
11
Arithmetic conditions for solvability of nonlinear systems of Diophantine equations
G. I. Arkhipov, V. N. Chubarikov
16
Multidimensional inverse problems of spectral analysis
A. L. Bukhgeim
21
A relationship between algorithmic problems and entropy characteristics of groups
R. I. Grigorchuk
24
Equations that are related to the Korteweg-de Vries equation
V. G. Drinfeld, V. V. Sokolov
29
Conjugate functions of several variables and multiple conjugate trigonometric series
L. V. Zhizhiashvili
34
Estimates for percolation thresholds for lattices in $R^n$
M. V. Men'shikov
36
Phenomenological and group symmetries in the geometry of two sets (theory of physical structures)
G. G. Mikhailichenko
39
Stabilization of solutions of a perturbed wave equation
L. A. Muravei
43
Conservatism of finite-difference schemes
V. V. Ostapenko
47
On the asymptotics of the spectrum of a transport operator in the plane-parallel case
M. Otelbaev
51
Estimation of the spectral function corresponding to an expansion in a multiple system of exponentials
Ya. Sh. Salimov
53
Inverse spectral problems for systems of equations
L. A. Sakhnovich
57
Szegő limit theorems in the case of a matrix locally sectorial symbol
I. M. Spitkovsky
61

CYBERNETICS AND THE REGULATION THEORY
Stability and approximation of generalized attainability sets
A. V. Lotov
66

FLUID MECHANICS
On a macroscopic method of entropy determination for non equilibrium states
A. G. Kulikovskii, M. È. Èglit
70

GEOPHYSICS
A new method for solving boundary value problems of continuum mechanics and mathematical physics for nonclassical domains
V. A. Babeshko
73
On the dynamics of change in composition of Koshabulak structure underground waters in the period of preparation of the Gazli earthquake of Mars 19, 1984
G. I. Voitov, M. B. Gokhberg, I. G. Kissin, Ya. A. Khodzhakuliev, S. Sh. Sheberdyev, K. B. Berdyev, V. Ya. Serdyukov
77
Effective thermoelastic moduli of two-phase composites with ellipsoidal inclusions
M. A. Grinfel'd, S. L. Langman
81
On the earthquake frequency-magnitude variations with depth
V. A. Kalinin, M. V. Rodkin
87
Relief of the upper mantle surface and main features of the Earth Northern Hemisphere crust
N. Ya. Kunin, N. V. Goncharova, S. V. Usenko
89
An inverse problem for forced harmonic oscillations of Rayleigh type
V. M. Markushevich
94
Integrated study of environment with radiophyskal methods
V. P. Shestopalov, A. I. Kalmykov, V. A. Komyak, A. S. Kurekin, A. P. Pichugin, A. S. Gavrilenko, A. P. Evdokimov, L. V. Elenskii, V. B. Efimov, V. I. Zeldis, V. V. Igolkin, S. S. Kavelin, Yu. A. Kuleshov, V. Yu. Levantovskii, A. S. Levda, Yu. G. Spiridonov, P. M. Torchun, A. B. Fetisov, V. N. Tsymbal, S. A. Shilo, S. E. Yatsevich
98

MATHEMATICAL PHYSICS
Representation of a three-dimensional vector field by scalar potentials
Ya. B. Zel'dovich, A. A. Ruzmaikin, D. D. Sokoloff
103
Scattering of many particles in an external electric field
E. L. Korotyaev
107
The Darboux transformation for a discrete analogue of Silin–Tikhonchuk equations
S. B. Leble, M. A. Sall'
110

PHYSICS
Stability of two-dimensional solitary waves of the Kadomtsev–Petviashvili equation
S. K. Zhdanov
115

CRYSTALLOGRAPHY
Crystal structure of $\mathrm{Ba}_3\mathrm{WO}_5\mathrm{Cl}_2$
V. I. Spitsyn, V. L. Balashov, A. L. Harlanov, L. N. Lukova, L. M. Kovba
125
Structure of ternary molybdate, $\mathrm{LiMgIn}(\mathrm{MoO}_4)_3$
Z. I. Khazheeva, M. V. Mohosoev, N. N. Smirnyagina, N. M. Kozhevnikova, F. P. Alekseev, V. I. Simonov
128
Crystal structure of $1$-[$1$-($2$-oxaperhydroazepino)ethyl] silatrane
V. E. Shklover, Yu. È. Ovchinnikov, Yu. T. Struchkov, V. M. Kopylov, T. G. Kovyazina, M. G. Voronkov
131

Number 2

MATHEMATICS
A difference scheme for equations of motion of a viscous heat conducting gas, its properties and error estimates “in the large”
A. A. Amosov, A. A. Zlotnik
265
Nonarithmeticity of truth predicate logics of provability
S. N. Artemov
270
Semi-explicit numerical methods for solving stiff problems
V. A. Vinokurov, N. V. Yuvchenko
272
Convergence of sequences in Carleson subclasses of functions of bounded type
V. I. Gavrilov, Zh. Pavicevic
278
Embedding of a Lipschitz space into a symmetric space
M. L. Gol'dman
283
Bounded solutions of a system of singular integral equations
I. N. Zabello, A. A. Kilbas
288
Approximation of optimality principles in a problem on finding a multiple maximin
D. A. Molodtsov
291
The Carleman matrix for elliptic systems
N. N. Tarkhanov
294

MECHANICS
An asymmetric problem of thermoelasticity for a half space
L. N. Germanovich, L. V. Ershov, I. D. Kill
298

AERODYNAMICS
Flow in a Chapman mixing layer
V. N. Diesperov
305

FLUID MECHANICS
An example of the equivalence of the effects density of stratification and rotation
V. A. Vladimirov
310
On the role of hematocrit in the etiology of hemodynamic diseases
S. S. Grigoryan, M. V. Kameneva
314
Quasi solutions of an inverse boundary value problem of hydroaerodynamics
A. M. Elizarov, N. B. Il'inskii, A. V. Potashev
319

GEOPHYSICS
Radar observations of floods from space
A. P. Pichugin, A. S. Gavrilenko, A. G. Gribunin, L. V. Elenskii, A. I. Kalmykov, V. P. Shestopalov
323
Some comments on the asthenosphere structure judging from basaltic liquid properties
N. I. Khitarov, N. Sh. Bagdasarov, A. M. Dorfman, E. B. Lebedev
326

MATHEMATICAL PHYSICS
Integral equations of convolution type in boundary value problems of the kinetic theory of gases
A. V. Latyshev, G. A. Manucharyan, Yu. I. Yalamov
331

PHYSICS
On a thermoelectric effect in a thin-walled superconducting cylinder
V. G. Valeev, G. F. Zharkov, Yu. A. Kukharenko
334
Self-consistent solution of the problem of scattering by an inhomogeneity in an open waveguide
A. I. Nosich, V. P. Shestopalov
337
Theory of the evaporation of two droplets with arbitrary distances between them
Yu. I. Yalamov, M. F. Barinova, Yu. K. Ostrovskii, E. R. Shchukin
341

Number 3

MATHEMATICS
Coupling of weakly regenerative fields
G. P. Klimov, V. F. Matveev
521
Nonstandard analysis of tangent cones
S. S. Kutateladze
525
Topological gap phenomenon for open manifolds of nonnegative curvature
V. B. Marenich
528
Perturbations of regularized factorizations and pseudoinversions
V. I. Meleshko
531
Inversion and description of parabolic potentials with $L_p$-densities
V. A. Nogin, B. S. Rubin
535
A criterion for admissibility of inference rules in modal and intuitionistic logic
V. V. Rybakov
538
$n$-dimensional normal quasimeromorphic mappings in arbitrary bounded domains
A. A. Simushev
542
Qualitative behavior of solutions as $t\to\infty$ of a class of partial differential equations
V. V. Skazka
547
Deficiency indices and the spectrum of one-dimensional singular differential operators in the degenerate case
Ya. T. Sultanaev
551
On the hyperbolicity of long wave equations
V. M. Teshukov
555
On the problem of the relation between the classes $\mathscr{P}$ and $\mathscr{NP}$
L. I. Tyagunov
560

CYBERNETICS AND THE REGULATION THEORY
Optimal algorithms for stochastic optimization under multiplicative noise
A. S. Nemirovski, B. T. Polyak, Ya. Z. Tsypkin
564

GEOPHYSICS
An elastic-fragile model of caving of a slope by explosion cut
V. V. Adushkin, A. E. Fedorov
568
On the discontinuity of rupture propagation in earthquake foci
V. M. Graizer
571
Effects of quick tectonic cycles in Tien Shan
E. I. Luke, V. N. Nikolaevskii, I. P. Pasechnik
575

PHYSICS
Behavior of an optically active substance in the Dicke extended model
V. A. Avetisov, S. A. Anikin
580
Studies of the optical stability of dielectrics using over threshold laser impulses
V. M. Osadchiev, S. G. Pozdnyakov, . . 
582
Coulomb corrections to low energy scattering
V. D. Mur, V. S. Popov
586
Threshold reorientation of the director of a nematic in the field of extraordinary light waves
N. V. Tabiryan
592

CRYSTALLOGRAPHY
Correction for the radiation nonmonochromaticity in small-angle experiment
D. I. Svergun, A. V. Semenyuk
621

Number 4

MATHEMATICS
The index of extremality and quasiextremal controls
A. A. Agrachev, R. V. Gamkrelidze
777
Convex problems of partition
A. D. Vainshtein
781
Embedding theorems for harmonic extensions of functions from S. L. Sobolev spaces
I. È. Verbitskii
785
On the extendability of joint limit distributions of order statistics
B. V. Gnedenko, Kh. Barakat, S. Khemida
789
Coupling of inhomogeneous Markov fields
G. P. Klimov, V. F. Matveev
791
Entropy doubling effect
R. E. Krichevskii
795
A system of exponentials on a curve
Yu. I. Lyubarskii
798
Asymptotic stability of nonautonomous systems of differential equations
A. Ya. Savchenko
801
On spectral analysis and scattering theory of a selfadjoint cluster operator for systems with a nonconserved number of particles
A. Khaitov
804

CYBERNETICS AND THE REGULATION THEORY
Generalization of the solution of the problem of control optimization with a nonclassical functional
A. A. Krasovskii
808

MECHANICS
Spatial problem of plastic subsurface failure of materials in compression along macrocracks
A. N. Guz, V. M. Nazarenko
812

FLUID MECHANICS
On opening of oil and gas wells
G. P. Cherepanov
816

THEORY OF ELASTICITY
Theory of plasticity taking account of microdeformations
V. V. Novozhilov, Yu. I. Kadashevich, Yu. A. Chernyakov
821

ASTRONOMY
Average density of the flux of meteoroids falling onto the Earth
P. B. Babadzhanov, R. Sh. Bibarsov, V. S. Getman, V. M. Kolmakov
824

GEOPHYSICS
Concentration of elements in the ocean as a geochemical factor
V. D. Korzh
827
A conditionally well-posed formulation of an inverse problem of gravimetry
A. V. Kudrya
831

MATHEMATICAL PHYSICS
Solution of a problem for a nonlinear equation of the theory of gravitation
E. I. Moiseev, V. A. Sadovnichii
835

PHYSICS
Laser control of the kinetics of heterogeneous metal oxidation
D. T. Alimov, F. V. Bunkin, V. L. Zhuravskii, V. M. Kosov, B. S. Luk'yanchuk, V. K. Tyugai, P. Kh. Khabibullaev
838
Determination of a new molecular constant for diatomic systems from overtone vibrational spectra
È. S. Medvedev
841
On the influence of $\mathrm{C}$-defects on the diamond heat conductivity
V. I. Nepsha, A. M. Naletov, N. F. Reshetnikov, Yu. A. Klyuev, G. B. Bokii
844
Temperature dependence of current-voltage characteristics of $p$-$\mathrm{Si}$/polymeric material/$\mathrm{SnO}_2$ diode
G. G. Untila, A. L. Kharitonov, L. B. Rubin
847

CRYSTALLOGRAPHY
Synthesis and atomic structure of a new double pyrophosphate, $\mathrm{LiFeP}_2\mathrm{O}_7$
E. A. Genkina, B. A. Maksimov, V. A. Timofeeva, A. B. Bykov, O. K. Melnikov
864

Number 5

MATHEMATICS
Uniqueness of the determination of the coefficient of the transport equation with a special type of source
D. S. Anikonov
1033
Indices of instability of differential operators
V. S. Belonosov
1037
A unitary subgroup and a congruence-subgroup of a multiplicative group of an integral group ring
A. A. Bovdi
1041
Asymptotic normality of mixing random fields
A. V. Bulinski
1044
Topological problems on lines and points of three-dimensional space
O. Ya. Viro
1049
Exponents of zero-dimensional Polish spaces
A. N. Vibornov
1053
Groups of order automorphisms of affine space and their discontinuous extensions
A. K. Guts
1057
Asymptotic expansion of solutions of the Dirichlet problem for elliptic equations and systems for the theory of elasticity in a perforated domain
G. A. Iosif'yan, O. A. Oleinik, A. S. Shamaev
1062
The Cauchy problem in the whole space and an inverse problem for equations of mean spatial illuminance propagation
V. R. Kireitov
1066
Boundary values of solutions of second-order elliptic equations that are degenerate on the boundary of the domain
I. M. Petrushko
1069
Decomposition of a function, analytic in a polygon, into the sum of periodic functions
A. M. Sedletskii
1073
Convergence to a limit state for groups of canonical linear transformations of $C^\ast$-algebras of canonical anticommutation relations
Yu. M. Sukhov, A. G. Shukhov
1076
The Cauchy problem for systems of partial differential equations with a distinguished variable
Chin' Ngok Min', Tran Duc Van
1080

FLUID MECHANICS
Influence of stratification on the stability of shear flows of an ideal fluid
Yu. N. Makov, Yu. A. Stepanyants
1084

GEOPHYSICS
On some applications of the wave interaction theory
V. P. Kuznetsov
1089

MATHEMATICAL PHYSICS
Quasiclassical approximation in the method of the inverse scattering problem
V. V. Geogdzhaev
1093
A method for the numerical investigation of the effect of convection on light beam propagation
B. P. Gerasimov, T. G. Elizarova
1098
Inverse problems for the radiation transport equation with cylindrical symmetry
V. I. Gryn'
1101

PHYSICS
On the behavior of the current-currying, stabilized superconductor in the varying magnetic fields
V. A. Al'tov, E. V. Blagov, V. V. Sychev, N. A. Kulysov
1104
Rechanneling effect for negatively charged high-energy particles
V. A. Muralev
1107
Temperature dependence of the lattice parameters and thermal expansion coefficients of the indium phosphide and arsenide solid solutions in the $7$$310$ K temperature range
N. N. Sirota, A. A. Sidorov
1111

CRYSTALLOGRAPHY
The crystal and molecular structure of $\alpha$-ethoxyacrolein semicarbazone
B. Ya. Antosyak, V. N. Biyushkin, N. A. Keiko, T. N. Mamashvili, M. G. Voronkov
1132
Crystal structure of a new mineral $\mathrm{Na}_8\mathrm{Ti}_{3{,}5}\mathrm{O}_2(\mathrm{OH})_2[\mathrm{SiO}_4]_4$ – polymorphous modification of natisite
E. V. Sokolova, N. A. Yamnova, Yu. K. Egorov-Tismenko, A. P. Khomyakov
1136
Structure of $1$-difluoronitroacetyl-$2{,}2$-dimethylhydrazine: a zwitterionic form
A. N. Chekhlov, V. K. Brel, I. V. Martynov
1142

Number 6

MATHEMATICS
Construction of regularizing operators that are close to optimal for convolution-type one-dimensional and multidimensional equations of the first kind
V. Ya. Arsenin, A. A. Timonov
1289
Approximation of periodic functions of several variables by a floating system of exponentials, and trigonometric widths
È. S. Belinskii
1294
Some conditions for the existence of solutions of nonlinear boundary value problems
S. A. Brykalov
1297
Boundary singularities generated by limit sets of holomorphic mappings
V. I. Gavrilov
1301
Characterization of certain function spaces by means of generalized differences
G. A. Kalyabin
1305
Investigation of solutions of a system of nonlinear Volterra–Fredholm operator equations
Ya. D. Mamedov, V. M. Musaev
1308
Finite groups with a centralizer of order $6$
A. A. Makhnev
1312
Convex hypersurfaces in a pseudo-Euclidean space
A. D. Milka
1314
A nonlocal boundary value problem for an elliptic equation with Bessel operators
Ho K'ang Cher
1317

CYBERNETICS AND THE REGULATION THEORY
Gradient methods in convex integer programming
M. M. Kovalev, N. N. Pisaruk
1322

THEORY OF ELASTICITY
High-frequency piezo ceramic shells
Le Khan Chau
1327

ASTRONOMY
Thin jets observable at some T Tau-type stars and cometary nebulae
A. L. Gulbudagyan
1331

GEOPHYSICS
On the motion of phase boundaries in the lithosphere
A. O. Gliko
1333
Linear transformation of anomalous gravitational field into equivalent mass distributions (the case of half-space)
V. N. Stadnichenko, I. I. Naumenko-Bondarenko
1336

MATHEMATICAL PHYSICS
The Bogolyubov kinetic equation for quantum dynamical systems
D. P. Sankovich
1340

PHYSICS
Kinetic self-focusing of the $\mathrm{CO}_2$ laser radiation in the air
N. G. Basov, V. A. Danilychev, I. G. Rudoĭ, A. M. Soroka
1346
The multiple contraction at diaphragming the discharge column in helium
N. V. Evtyukhin, A. D. Margolin, A. V. Savel'ev, V. M. Shmelev
1350
On the diffusion-electrodynamic instability of ionization wave front
I. A. Kirillov, V. D. Rusanov, A. A. Fridman
1352
Velocity “eigenvalue” of the interphase
B. A. Malomed, E. N. Rumanov
1355

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