@article{DE_1968_4_6_a1,
     author = {G. S. Krechetov},
     title = {Asymptotic stability of the zero solution of a non-autonomous system of two differential equations. {II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {973--982},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_6_a1/}
}