Publications in Math-Net.Ru
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On limit cycles of a two-dimensional autonomous system with nonlinearities of third degree
Differ. Uravn., 23:5 (1987), 825–834
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Limit cycles of a two-dimensional autonomous system with quadratic nonlinearities
Differ. Uravn., 21:12 (1985), 2072–2082
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Isolated periodic solutions of certain differential equations
Differ. Uravn., 14:5 (1978), 935–937
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The normal form of some differential equations
Differ. Uravn., 14:4 (1978), 747–749
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Strong isochrony of the center. Periods of limit cycles of the Lienard system
Differ. Uravn., 11:5 (1975), 811–819
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