@article{DE_1971_7_4_a0,
     author = {B. F. Bylov},
     title = {Generalized regular systems},
     journal = {Differencialʹnye uravneni\^a},
     pages = {575--591},
     publisher = {mathdoc},
     volume = {7},
     number = {4},
     year = {1971},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_4_a0/}
}