TY  - JOUR
AU  - E. L. Tsvetkov
TI  - Solvability and spectrum of the third boundary problem for an elliptic differential-difference equation
JO  - Matematičeskie zametki
PY  - 1992
SP  - 107
EP  - 114
VL  - 51
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_1992_51_6_a13/
LA  - ru
ID  - MZM_1992_51_6_a13
ER  -