@misc{indiciae61257fe93a7f,
  title = {Spectral weight function in the Hubbard model for a cubic cluster.},
  author = {L Tan and Q Li and J Callaway},
  year = {1991},
  doi = {10.1103/physrevb.44.341},
  url = {https://pubmed.ncbi.nlm.nih.gov/9998251/},
  note = {Source identifier: 9998251}
}