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@article{DAN_1958_120_6_a15, author = {M. L. Lidov}, title = {On limit solutions in the vicinity of a singular point}, journal = {Doklady Akademii Nauk}, pages = {1224--1227}, publisher = {mathdoc}, volume = {120}, number = {6}, year = {1958}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DAN_1958_120_6_a15/} }
M. L. Lidov. On limit solutions in the vicinity of a singular point. Doklady Akademii Nauk, Tome 120 (1958) no. 6, pp. 1224-1227. http://geodesic.mathdoc.fr/item/DAN_1958_120_6_a15/