TY  - BOOK
AU  - David J. Toms
TI  - The Schwinger action principle and effective action
SN  - 9781107406308 (PB)
U1  - 530.12 TOM(SCH) 
PY  - 2012///
PB  - Cambridge University Press
KW  - Mathematical physics
KW  - Quantum theory
KW  - Schwinger action principle
ER  -