TY  - JOUR
AU  - O. A. Liskovets
TI  - Incorrect problems with a closed non-invertible operator
JO  - Differencialʹnye uravneniâ
PY  - 1967
SP  - 636
EP  - 646
VL  - 3
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1967_3_4_a5/
LA  - ru
ID  - DE_1967_3_4_a5
ER  -