TY  - JOUR
AU  - I. A. Danilova
TI  - Exterior boundary value problems for the Helmholtz equation
JO  - Informatics and Automation
PY  - 1968
SP  - 58
EP  - 72
VL  - 103
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/TRSPY_1968_103_a4/
LA  - ru
ID  - TRSPY_1968_103_a4
ER  -