@article{DE_1976_12_4_a7,
     author = {S. G. Kondratenya},
     title = {On the question of the existence and uniqueness of the solution of ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {645--652},
     year = {1976},
     volume = {12},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_4_a7/}
}