TY  - JOUR
AU  - M. A. Gol'dman
AU  - S. N. Krachkovskii
TI  - On a class of perturbations of a linear closed operator with a closed range
JO  - Doklady Akademii Nauk
PY  - 1971
SP  - 1243
EP  - 1246
VL  - 197
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1971_197_6_a1/
LA  - ru
ID  - DAN_1971_197_6_a1
ER  -