@misc{indiciae186846b3b626,
  title = {Butterfly vertebra.},
  author = {R J de Graaf and B Matricali and H L Hamburger},
  year = {1982},
  doi = {10.1016/0303-8467(82)90039-7},
  url = {https://pubmed.ncbi.nlm.nih.gov/6295680/},
  note = {Source identifier: 6295680}
}