@article{DE_1969_5_8_a8,
     author = {Yu. M. Krivonos and B. A. Galanov},
     title = {A certain method of differential descent},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1426--1430},
     publisher = {mathdoc},
     volume = {5},
     number = {8},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_8_a8/}
}