@article{DE_1971_7_11_a2,
     author = {I. G. Egorov},
     title = {The stability in the large of the zero solution of a certain system of three differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1960--1966},
     publisher = {mathdoc},
     volume = {7},
     number = {11},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_11_a2/}
}