@misc{indiciae594362a5358a,
  title = {Transferable nonorthogonal tight-binding parameters for silicon.},
  author = {PB Allen and JQ Broughton and AK McMahan},
  year = {1986},
  doi = {10.1103/physrevb.34.859},
  url = {https://pubmed.ncbi.nlm.nih.gov/9939695/},
  note = {Source identifier: 9939695}
}