@misc{indiciaedcbd2eec176b,
  title = {Optical absorption in strong-coupling-limit Hubbard models.},
  author = {C Chen and H Schüttler},
  year = {1991},
  doi = {10.1103/physrevb.43.3771},
  url = {https://pubmed.ncbi.nlm.nih.gov/9997716/},
  note = {Source identifier: 9997716}
}