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@article{DE_1982_18_2_a0, author = {N. G. Bulgakov}, title = {On the stability of invariant sets}, journal = {Differencialʹnye uravneni\^a}, pages = {187--194}, publisher = {mathdoc}, volume = {18}, number = {2}, year = {1982}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1982_18_2_a0/} }
N. G. Bulgakov. On the stability of invariant sets. Differencialʹnye uravneniâ, Tome 18 (1982) no. 2, pp. 187-194. http://geodesic.mathdoc.fr/item/DE_1982_18_2_a0/