TY  - JOUR
AU  - V. K. Romanko
TI  - Eigenvalues of boundary value problems for certain equations which change type
JO  - Differencialʹnye uravneniâ
PY  - 1983
SP  - 1759
EP  - 1764
VL  - 19
IS  - 10
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1983_19_10_a11/
LA  - ru
ID  - DE_1983_19_10_a11
ER  -