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@article{DAN_1975_223_1_a9, author = {S. Ya. L'vin}, title = {On a class of degenerate differential equations of higher order}, journal = {Doklady Akademii Nauk}, pages = {42--45}, publisher = {mathdoc}, volume = {223}, number = {1}, year = {1975}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1975_223_1_a9/} }
S. Ya. L'vin. On a class of degenerate differential equations of higher order. Doklady Akademii Nauk, Tome 223 (1975) no. 1, pp. 42-45. http://geodesic.mathdoc.fr/item/DAN_1975_223_1_a9/