@misc{indiciae171b2583f512,
  title = {Continuous, quantized and modal variation.},
  author = {J M SMITH},
  year = {1960},
  doi = {10.1098/rspb.1960.0047},
  url = {https://pubmed.ncbi.nlm.nih.gov/13854863/},
  note = {Source identifier: 13854863}
}