@article{DE_1978_14_4_a19,
     author = {A. E. Zernov},
     title = {On solutions of a class of singular differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {734--735},
     year = {1978},
     volume = {14},
     number = {4},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_4_a19/}
}