TY  - JOUR
AU  - Ya. N. Mamedov
TI  - On some eigenvalue problems for an equation of mixed type
JO  - Differencialʹnye uravneniâ
PY  - 1990
SP  - 163
EP  - 167
VL  - 26
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1990_26_1_a21/
LA  - ru
ID  - DE_1990_26_1_a21
ER  -