TY  - JOUR
AU  - T. V. Chekmarev
TI  - A nonlocal problem for a system of equations of Helmholtz type
JO  - Differencialʹnye uravneniâ
PY  - 1988
SP  - 724
EP  - 726
VL  - 24
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1988_24_4_a32/
LA  - ru
ID  - DE_1988_24_4_a32
ER  -