TY  - BOOK
AU  - Helffer Bernard
TI  - Semi classicial analysis for the schrodinger operator and applications
T2  - Lecture notes in mathematics; 1336
U1  - CN1, M8 
PY  - 1988///
CY  - Berlin
PB  - Springer-Verlag         
KW  -  Quantum Theory
KW  - Physics
ER  -