TY  - JOUR
AU  - B. F. Bylov
TI  - A generalization of a theorem of Perron
JO  - Differencialʹnye uravneniâ
PY  - 1965
SP  - 1597
EP  - 1600
VL  - 1
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1965_1_12_a5/
LA  - ru
ID  - DE_1965_1_12_a5
ER  -