TY  - BOOK
AU  - Blanchard Philippe
AU  -  Bruning Erwin
TI  - Variational methods in mathematical physics: a unified approach
T2  - Texts and monographs in physics
U1  - C:(B42), N2 
PY  - 1992///
CY  - Berlin
PB  - Springer Verlag        
KW  -  Variational principles
KW  - Physics
ER  -