@article{DE_1973_9_11_a10,
     author = {M. M. Khapaev},
     title = {A generalization of {Ljapunov's} second method},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2020--2028},
     publisher = {mathdoc},
     volume = {9},
     number = {11},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_11_a10/}
}