@article{LFMO_1926_1_1_a6,
     author = {B. Kojalovitch},
     title = {Sur les \'equations diff\'erentielles ind\'etermin\'ees. {(I-re} communication)},
     journal = {Journal de la Soci\'et\'e Physico-Math\'ematique de L\'eningrade},
     pages = {66--76},
     year = {1926},
     volume = {1},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/LFMO_1926_1_1_a6/}
}