TY  - JOUR
AU  - V. M. Babich
TI  - On the exact justification of short wave approximation in three dimension case
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1973
SP  - 23
EP  - 51
VL  - 34
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1973_34_a2/
LA  - ru
ID  - ZNSL_1973_34_a2
ER  -