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@article{DE_1968_4_11_a2, author = {E. A. Nazarov}, title = {Modes of approach of trajectories toward a singular point}, journal = {Differencialʹnye uravneni\^a}, pages = {1949--1955}, publisher = {mathdoc}, volume = {4}, number = {11}, year = {1968}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1968_4_11_a2/} }
E. A. Nazarov. Modes of approach of trajectories toward a singular point. Differencialʹnye uravneniâ, Tome 4 (1968) no. 11, pp. 1949-1955. http://geodesic.mathdoc.fr/item/DE_1968_4_11_a2/