@article{DE_1968_4_6_a3,
     author = {S. G. Kondratenya},
     title = {Mobile singular points of solutions of certain ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {991--999},
     publisher = {mathdoc},
     volume = {4},
     number = {6},
     year = {1968},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1968_4_6_a3/}
}