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@article{DE_1971_7_2_a18, author = {G. S. Krechetov}, title = {The perturbations that preserve the stability property}, journal = {Differencialʹnye uravneni\^a}, pages = {363--364}, publisher = {mathdoc}, volume = {7}, number = {2}, year = {1971}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1971_7_2_a18/} }
G. S. Krechetov. The perturbations that preserve the stability property. Differencialʹnye uravneniâ, Tome 7 (1971) no. 2, pp. 363-364. http://geodesic.mathdoc.fr/item/DE_1971_7_2_a18/