@misc{indiciaef910a2f7bacd,
  title = {Sperm entrance in echinoderms; observed with the phase contrast microscope.},
  author = {J C DAN},
  year = {1950},
  doi = {10.2307/1538470},
  url = {https://pubmed.ncbi.nlm.nih.gov/14801005/},
  note = {Source identifier: 14801005}
}