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@article{DE_1977_13_2_a17, author = {G. A. Leonov}, title = {An analogue of the {Bendixson} criterion for a third order equation}, journal = {Differencialʹnye uravneni\^a}, pages = {367--368}, publisher = {mathdoc}, volume = {13}, number = {2}, year = {1977}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1977_13_2_a17/} }
G. A. Leonov. An analogue of the Bendixson criterion for a third order equation. Differencialʹnye uravneniâ, Tome 13 (1977) no. 2, pp. 367-368. http://geodesic.mathdoc.fr/item/DE_1977_13_2_a17/