@article{DE_1980_16_2_a1,
     author = {I. U. Bronshtein and V. F. Cherny},
     title = {Linear extensions that satisfy the {Perron} {condition.~II}},
     journal = {Differencialʹnye uravneni\^a},
     pages = {201--207},
     publisher = {mathdoc},
     volume = {16},
     number = {2},
     year = {1980},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1980_16_2_a1/}
}