@misc{indiciaeeec018188072,
  title = {Maximum likelihood phylogenetic estimation from DNA sequences with variable rates over sites: approximate methods.},
  author = {Z Yang},
  year = {1994},
  doi = {10.1007/bf00160154},
  url = {https://pubmed.ncbi.nlm.nih.gov/7932792/},
  note = {Source identifier: 7932792}
}