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@article{DE_1996_32_12_a16, author = {V. I. Bulgakov and A. A. Grin'}, title = {On a bifurcation of a non-rough focus of a third-order autonomous system}, journal = {Differencialʹnye uravneni\^a}, pages = {1703}, publisher = {mathdoc}, volume = {32}, number = {12}, year = {1996}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1996_32_12_a16/} }
V. I. Bulgakov; A. A. Grin'. On a bifurcation of a non-rough focus of a third-order autonomous system. Differencialʹnye uravneniâ, Tome 32 (1996) no. 12. http://geodesic.mathdoc.fr/item/DE_1996_32_12_a16/