@misc{indiciae7b8482c7bb58,
  title = {Haldane gap in three dimensions: A rigorous example.},
  author = {H Tasaki},
  year = {1990},
  doi = {10.1103/physrevlett.64.2066},
  url = {https://pubmed.ncbi.nlm.nih.gov/10041568/},
  note = {Source identifier: 10041568}
}