@article{DE_1977_13_6_a12,
     author = {A. A. Shestakov},
     title = {Criteria for the stability of sets with respect to a nonautonomous differential system},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1079--1090},
     publisher = {mathdoc},
     volume = {13},
     number = {6},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_6_a12/}
}