TY  - JOUR
AU  - N. B. Uskova
TI  - Estimates for spectral expansions of the eigenvectors of some classes of perturbed differential operators
JO  - Differencialʹnye uravneniâ
PY  - 1997
SP  - 564
EP  - 566
VL  - 33
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1997_33_4_a21/
LA  - ru
ID  - DE_1997_33_4_a21
ER  -