TY  - JOUR
AU  - M. B. Muratbekov
TI  - Separability and estimates for the widths of sets connected with the domain of a nonlinear operator of Schr\"odinger type
JO  - Differencialʹnye uravneniâ
PY  - 1991
SP  - 1034
EP  - 1042
VL  - 27
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1991_27_6_a15/
LA  - ru
ID  - DE_1991_27_6_a15
ER  -