@misc{indiciae73580b1e791c,
  title = {A selectively driven molecular clock.},
  author = {D Hartl and D Dykhuizen},
  year = {1979},
  doi = {10.1038/281230a0},
  url = {https://pubmed.ncbi.nlm.nih.gov/384266/},
  note = {Source identifier: 384266}
}