@article{DE_1970_6_11_a16,
     author = {A. F. Andreev and V. Kuznetsov},
     title = {A theorem on the uniqueness of the $O$-curve in $N_2$ under conditions of the type of the {Osgood} condition},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2080--2082},
     publisher = {mathdoc},
     volume = {6},
     number = {11},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_11_a16/}
}