TY  - RPRT
TI  - Optical absorption in strong-coupling-limit Hubbard models.
AU  - C Chen
AU  - H Schüttler
PY  - 1991
DO  - 10.1103/physrevb.43.3771
UR  - https://pubmed.ncbi.nlm.nih.gov/9997716/
ID  - 9997716
ER  -