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@article{DE_1972_8_2_a3, author = {\`E. I. Grudo}, title = {The structure of the solutions of a certain system of two differential {equations.~II}}, journal = {Differencialʹnye uravneni\^a}, pages = {230--242}, publisher = {mathdoc}, volume = {8}, number = {2}, year = {1972}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1972_8_2_a3/} }
È. I. Grudo. The structure of the solutions of a certain system of two differential equations.~II. Differencialʹnye uravneniâ, Tome 8 (1972) no. 2, pp. 230-242. http://geodesic.mathdoc.fr/item/DE_1972_8_2_a3/