TY  - RPRT
TI  - Anderson model in thermo field dynamics: Generalized Feynman-diagram method.
AU  - H Matsumoto
AU  - H Umezawa
PY  - 1985
DO  - 10.1103/physrevb.31.4433
UR  - https://pubmed.ncbi.nlm.nih.gov/9936376/
ID  - 9936376
ER  -