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@article{DE_1987_23_6_a21, author = {A. V. Makhorkin}, title = {Bifurcation of the periodic solution of a completely integrable {Pfaffian} system}, journal = {Differencialʹnye uravneni\^a}, pages = {1084--1086}, publisher = {mathdoc}, volume = {23}, number = {6}, year = {1987}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1987_23_6_a21/} }
A. V. Makhorkin. Bifurcation of the periodic solution of a completely integrable Pfaffian system. Differencialʹnye uravneniâ, Tome 23 (1987) no. 6, pp. 1084-1086. http://geodesic.mathdoc.fr/item/DE_1987_23_6_a21/