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@article{DE_1991_27_5_a3, author = {B. S. Kalitin}, title = {Development of {Lyapunov's} theorem on stability}, journal = {Differencialʹnye uravneni\^a}, pages = {758--766}, publisher = {mathdoc}, volume = {27}, number = {5}, year = {1991}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1991_27_5_a3/} }
B. S. Kalitin. Development of Lyapunov's theorem on stability. Differencialʹnye uravneniâ, Tome 27 (1991) no. 5, pp. 758-766. http://geodesic.mathdoc.fr/item/DE_1991_27_5_a3/