TY  - JOUR
AU  - A. P. Kiselev
TI  - Focusing of the WKB-solutions of the equation $[\Delta+k^2n^2(x)]u=0$, $k\to\infty$
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 1975
SP  - 123
EP  - 128
VL  - 51
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_1975_51_a6/
LA  - ru
ID  - ZNSL_1975_51_a6
ER  -