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@article{DE_1971_7_2_a9, author = {A. I. Yablonskii}, title = {The qualitative behavior of the trajectories of a certain class of differential systems}, journal = {Differencialʹnye uravneni\^a}, pages = {279--285}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_2_a9/} }
A. I. Yablonskii. The qualitative behavior of the trajectories of a certain class of differential systems. Differencialʹnye uravneniâ, Tome 7 (1971) no. 2, pp. 279-285. http://geodesic.mathdoc.fr/item/DE_1971_7_2_a9/