TY  - BOOK
AU  - Yourgrau, W. 
AU  - Mandelstam, S.
TI  - Variational principles in dynamics and quantum theory
SN  - 9780486458885
U1  - 530.145 
PY  - 2007///
CY  - New York
PB  - Dover
KW  - PHYSICS
KW  - QUANTUM MECHANICS
ER  -