@misc{indiciaebc3f07df7e5f,
  title = {Two theorems on the Hubbard model.},
  author = {EH Lieb},
  year = {1989},
  doi = {10.1103/physrevlett.62.1201},
  url = {https://pubmed.ncbi.nlm.nih.gov/10039602/},
  note = {Source identifier: 10039602}
}