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@article{DE_1973_9_3_a19, author = {V. M. Gershtein}, title = {Centers of attraction of dynamical systems}, journal = {Differencialʹnye uravneni\^a}, pages = {553--555}, publisher = {mathdoc}, volume = {9}, number = {3}, year = {1973}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1973_9_3_a19/} }
V. M. Gershtein. Centers of attraction of dynamical systems. Differencialʹnye uravneniâ, Tome 9 (1973) no. 3, pp. 553-555. http://geodesic.mathdoc.fr/item/DE_1973_9_3_a19/