TY  - JOUR
AU  - A. P. Makhmudov
TI  - Nonlinear perturbations of regular spectral problems with a
JO  - Doklady Akademii Nauk
PY  - 1984
SP  - 1318
EP  - 1323
VL  - 277
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DAN_1984_277_6_a8/
LA  - ru
ID  - DAN_1984_277_6_a8
ER  -