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@article{DE_1984_20_10_a8, author = {I. P. Martynov}, title = {On the theory of third-order systems without moving critical points}, journal = {Differencialʹnye uravneni\^a}, pages = {1720--1726}, publisher = {mathdoc}, volume = {20}, number = {10}, year = {1984}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1984_20_10_a8/} }
I. P. Martynov. On the theory of third-order systems without moving critical points. Differencialʹnye uravneniâ, Tome 20 (1984) no. 10, pp. 1720-1726. http://geodesic.mathdoc.fr/item/DE_1984_20_10_a8/