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@article{DAN_1989_304_2_a1, author = {Yu. A. Dubinskii}, title = {The necessity of {Kovalevskaya} conditions, and their}, journal = {Doklady Akademii Nauk}, pages = {268--271}, publisher = {mathdoc}, volume = {304}, number = {2}, year = {1989}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1989_304_2_a1/} }
Yu. A. Dubinskii. The necessity of Kovalevskaya conditions, and their. Doklady Akademii Nauk, Tome 304 (1989) no. 2, pp. 268-271. http://geodesic.mathdoc.fr/item/DAN_1989_304_2_a1/