TY  - BOOK
AU  - Forman,Nanny, Froman, Per Olof
AU  - x
TI  - JWKB approximation: Cointribtion to the theory
SN  - x
U1  - 530.122/FRJ 
PY  - 1965///
CY  - Amsterdam
PB  - North Holland
KW  - Physics
N1  - x
ER  -