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 Ordinary Differential Equations The structure of sets of values of lower and upper Bohl exponents of a linear differential systemE. A. Barabanov 291 An iterative algorithm for the approximate construction of cycles of autonomous systemsN. A. Bobylev, S. K. Korovin 301 On the stability of some classes of solutions of linear differential systems with small periodic perturbationsA. K. Demenchuk 307 On the absence of unbounded regular solutions of the second-order Emden–Fowler equationN. A. Izobov 311 On the basis property and uniform minimality of systems of root functions of differential operators. IN. B. Kerimov 317 An estimate for the characteristic exponents of the Hill equation with a periodic coefficientA. V. Lipnitskii 323 Malkin estimates for the norm of the Cauchy matrix of a linear differential systemE. K. Makarov 328 On rapidly increasing solutions of the generalized Emden–Fowler equationV. A. Rabtsevich 335 On regular operators for linear systems of equationsV. K. Romanko 339 Partial Differential Equations On the weighted problem for a second-order elliptic operator with singular coefficientsG. G. Devdariani 346 An analogue of the Tricomi problem for an equation of mixed type with retarded argumentA. N. Zarubin 350 An order exact estimate uniform in $\mathbf R^N$ for $N=2$ and $N=3$, for the squares of fundamental functions of a selfadjoint extension in $\mathbf R^N$ of the Schrödinger operator with a potential satisfying Kato's conditionV. A. Il'in, E. I. Moiseev 357 On the theory of the generalized parabolic-hyperbolic heat equationN. Yu. Kapustin 375 On the solvability of the generalized mixed problemS. P. Mitin, A. P. Soldatov 384 On the uniqueness of the solution of a three-dimensional boundary value problem for an equation of mixed typeE. I. Moiseev 389 On the unique solvability of the Tricomi problem for a special domainA. A. Polosin 394 On the Dirichlet problem for a second-order elliptic equation with noncoordinated degeneration of the initial dataV. A. Rukavishnikov 402 A Tricomi problem with a nonlocal conjugation condition for the generalized Tricomi equationK. B. Sabitov, A. Kh. Isyangildin 409 Short Communications Existence and uniqueness of a strong solution of the Darboux problemA. V. Bulatov 413 On a problem for the Poisson equation with higher-order normal derivatives on the boundaryV. V. Karachik 416 Initial value and boundary value problems with singularitiesYu. A. Konyaev 419 The Riemann–Hilbert problem with discontinuous coefficients for the Moisil–Teodorescu systemR. P. Matyukaite 422 Properties of the Schrödinger operator with a complex-valued potentialA. A. Stakun 423 Boundary value problems for partial differential equations with strong degenerationA. Yu. Shirokova 426