@article{DE_1965_1_12_a5,
     author = {B. F. Bylov},
     title = {A generalization of a theorem of {Perron}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1597--1600},
     publisher = {mathdoc},
     volume = {1},
     number = {12},
     year = {1965},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1965_1_12_a5/}
}