TY  - BOOK
AU  - Toms David J.
TI  - Schwinger action principle and effective action  
SN  - 9.78E+12
U1  - 530.12 
PY  - 2009///
CY  - New York
PB  - CUP
KW  - Mathematical physics.
KW  - Quantum theory
KW  - Schwinger action principle
UR  - http://ebooks.cambridge.org/ebook.jsf?bid=CBO9780511585913
ER  -