Geodesic
Specific relaxation cycles of systems of Lotka–Volterra type
Izvestiya. Mathematics, Tome 38 (1992) no. 3, pp. 503-523 
A. Yu. Kolesov. Specific relaxation cycles of systems of Lotka–Volterra type. Izvestiya. Mathematics, Tome 38 (1992) no. 3, pp. 503-523. http://geodesic.mathdoc.fr/item/IM2_1992_38_3_a3/
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     title = {Specific relaxation cycles of systems of {Lotka{\textendash}Volterra} type},
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     url = {http://geodesic.mathdoc.fr/item/IM2_1992_38_3_a3/}
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Voir la notice de l'article provenant de la source Math-Net.Ru

Effective conditions are found under which planar relaxation systems of a certain class have cycles with one $\delta$-like component and another component close to discontinuous. A complete asymptotics of the cycles is constructed and the question on their stability is solved.

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