@misc{indiciae0724b37dbb4d,
  title = {Two empires or three?},
  author = {E Mayr},
  year = {1998},
  doi = {10.1073/pnas.95.17.9720},
  url = {https://pubmed.ncbi.nlm.nih.gov/9707542/},
  note = {Source identifier: 9707542}
}