TY  - JOUR
AU  - N. Ya. Kirpichnikova
TI  - The second approximation of the ray method for calculation of the intensity of the wave front in isotropic
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1997
SP  - 79
EP  - 94
VL  - 239
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1997_239_a6/
LA  - ru
ID  - ZNSL_1997_239_a6
ER  -