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@article{DAN_1961_141_6_a4, author = {A. Yu. Levin}, title = {On the stability of solutions of second-order equations}, journal = {Doklady Akademii Nauk}, pages = {1298--1301}, publisher = {mathdoc}, volume = {141}, number = {6}, year = {1961}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1961_141_6_a4/} }
A. Yu. Levin. On the stability of solutions of second-order equations. Doklady Akademii Nauk, Tome 141 (1961) no. 6, pp. 1298-1301. http://geodesic.mathdoc.fr/item/DAN_1961_141_6_a4/