@article{DE_1988_24_10_a23,
     author = {S. G. Kondratenya and E. G. Prolisko and T. I. Shilo},
     title = {On the existence of polar solutions to first-order differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1824--1826},
     publisher = {mathdoc},
     volume = {24},
     number = {10},
     year = {1988},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1988_24_10_a23/}
}