@article{DE_1978_14_10_a1,
     author = {I. U. Bronshtein and V. F. Cherny},
     title = {Linear extensions that satisfy the {Perron} {condition.~I}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1739--1751},
     publisher = {mathdoc},
     volume = {14},
     number = {10},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_10_a1/}
}