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2003, Volume 39, Number 2  

Ordinary Differential Equations
The Center-Focus Problem for a System with Homogeneous Nonlinearities in the Case of Zero Eigenvalues of the Linear Part
A. F. Andreev, A. P. Sadovskii, V. A. Tsikalyuk 		147–153
A Generalized Normal Form and Formal Equivalence of Systems of Differential Equations with Zero Characteristic Numbers
V. V. Basov 		154–170
An Orr–Sommerfeld Equation with a First-Order Differential Turning Point
V. N. Bobochko 		171–179
Frequency Conditions in Controller Design for Dynamical Systems in Hilbert Spaces
V. A. Brusin, M. M. Kogan 		180–185
On the Continuous Dependence of an Almost Periodic Solution of a Nonlinear Control System on a Parameter
A. G. Ivanov 		186–197
On Boundary Value Problems for Linear Differential Systems with Singularities
I. T. Kiguradze 		198–209
Existence Theorems for Viable Solutions of Stochastic Differential Equations
A. A. Levakov 		210–216
Sufficient Conditions for the Local Proportional Controllability of Lyapunov Exponents of Linear Systems
E. K. Makarov, S. N. Popova 		217–226
Sufficient and Necessary Conditions for the Stable Controllability of a Nonlinear Nonstationary System on the Plane in the Critical Case
Yu. V. Masterkov, L. I. Rodina 		227–235
Application of the Boundary Function Method to Finding Slow Periodic Solutions of Singularly Perturbed Bang-Bang Systems
L. M. Fridman 		236–245
Necessary Conditions for the Existence of Global Solutions of Systems of Higher-Order Nonlinear Ordinary Differential Equations and Inequalities
J. Hay 		246–252

Finite difference equations
Synthesis of Nilpotent Two-Parameter Discrete Systems Over a Commutative Ring
I. V. Gaishun 		253–260
Distinguishability Conditions for Stationary Linear Systems
A. A. Lomov 		261–266
Necessary Cone Optimality Conditions for Trajectories of Discrete Inclusions
N. N. Rachkovskii 		267–275

Short Communications
On the Dirichlet Problem for a Multidimensional Analog of the Bitsadze System
V. E. Balabaev 		276–277
Problems Without Initial Conditions for a Nonclassical Equation
G. O. Vafodorova 		278–280
On Periodic Solutions of a Lyapunov Type Equation
L. A. Danilovich, V. N. Laptinskii 		281–283

Letter to the editor
Letter to the Editorial Board
V. G. Korneev 		284
 
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