TY  - RPRT
TI  - Cumulant methods for electron-phonon problems. I. Perturbative expansions
AU  - Robinson, Paul J.
AU  - Dunn, Ian S.
AU  - Reichman, David R.
PY  - 2022
DO  - 10.1103/physrevb.105.224304
UR  - https://www.osti.gov/biblio/1979765
ID  - 1979765
ER  -