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@article{DE_1984_20_9_a21, author = {P. B. Golokvoschyus}, title = {Periodic solutions of a special nonlinear differential system}, journal = {Differencialʹnye uravneni\^a}, pages = {1623--1628}, publisher = {mathdoc}, volume = {20}, number = {9}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_9_a21/} }
P. B. Golokvoschyus. Periodic solutions of a special nonlinear differential system. Differencialʹnye uravneniâ, Tome 20 (1984) no. 9, pp. 1623-1628. http://geodesic.mathdoc.fr/item/DE_1984_20_9_a21/