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@article{DAN_1967_176_6_a13, author = {M. M. Khapaev}, title = {A theorem of {Ljapunov} type}, journal = {Doklady Akademii Nauk}, pages = {1262--1265}, publisher = {mathdoc}, volume = {176}, number = {6}, year = {1967}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1967_176_6_a13/} }
M. M. Khapaev. A theorem of Ljapunov type. Doklady Akademii Nauk, Tome 176 (1967) no. 6, pp. 1262-1265. http://geodesic.mathdoc.fr/item/DAN_1967_176_6_a13/