@article{DE_1989_25_6_a26,
     author = {V. P. Nozdracheva},
     title = {Existence of tangential $O$-curves of an algebroid system of differential equations in some degenerate cases},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1059--1062},
     publisher = {mathdoc},
     volume = {25},
     number = {6},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1989_25_6_a26/}
}