@article{DE_1982_18_2_a22,
     author = {L. S. Sergienko},
     title = {On a degenerate system of composite type},
     journal = {Differencialʹnye uravneni\^a},
     pages = {349--351},
     publisher = {mathdoc},
     volume = {18},
     number = {2},
     year = {1982},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1982_18_2_a22/}
}