@article{DE_1973_9_4_a2,
     author = {V. I. Korobov},
     title = {Controllability, stability of certain nonlinear systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {614--619},
     publisher = {mathdoc},
     volume = {9},
     number = {4},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_4_a2/}
}