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@article{DE_1990_26_3_a6, author = {B. S. Klebanov}, title = {The method of sectors in the proof of {Lyapunov} instability}, journal = {Differencialʹnye uravneni\^a}, pages = {408--414}, publisher = {mathdoc}, volume = {26}, number = {3}, year = {1990}, language = {ru}, url = {http://geodesic.mathdoc.fr/item/DE_1990_26_3_a6/} }
B. S. Klebanov. The method of sectors in the proof of Lyapunov instability. Differencialʹnye uravneniâ, Tome 26 (1990) no. 3, pp. 408-414. http://geodesic.mathdoc.fr/item/DE_1990_26_3_a6/