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@article{DAN_1960_131_5_a8, author = {V. A. Pliss}, title = {On invariant surfaces of a system of two differential equations}, journal = {Doklady Akademii Nauk}, pages = {1022--1024}, publisher = {mathdoc}, volume = {131}, number = {5}, year = {1960}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1960_131_5_a8/} }
V. A. Pliss. On invariant surfaces of a system of two differential equations. Doklady Akademii Nauk, Tome 131 (1960) no. 5, pp. 1022-1024. http://geodesic.mathdoc.fr/item/DAN_1960_131_5_a8/