TY  - JOUR
AU  - Z. A. Yanson
TI  - Asymptotics of solutions of the Helmholtz equation in a~region of caustic shadow~I.
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1983
SP  - 172
EP  - 185
VL  - 128
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1983_128_a19/
LA  - ru
ID  - ZNSL_1983_128_a19
ER  -