TY  - JOUR
AU  - V. V. Karachik
TI  - Solvability of a boundary value problem for the Helmholtz equation with higher-order normal derivatives on the boundary
JO  - Differencialʹnye uravneniâ
PY  - 1992
SP  - 907
EP  - 909
VL  - 28
IS  - 5
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1992_28_5_a23/
LA  - ru
ID  - DE_1992_28_5_a23
ER  -