TY  - JOUR
AU  - S. G. Krein
TI  - Singularly perturbed linear differential equations in a Banach space
JO  - Differencialʹnye uravneniâ
PY  - 1985
SP  - 1814
EP  - 1817
VL  - 21
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1985_21_10_a28/
LA  - ru
ID  - DE_1985_21_10_a28
ER  -