TY  - JOUR
AU  - V. I. Fomin
TI  - Small perturbations of a singular differential equation with a constant unbounded operator coefficient
JO  - Differencialʹnye uravneniâ
PY  - 1989
SP  - 1629
EP  - 1630
VL  - 25
IS  - 9
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1989_25_9_a27/
LA  - ru
ID  - DE_1989_25_9_a27
ER  -