@misc{indiciaef3e80641539c,
  title = {Normal and delayed ovulation in the human.},
  author = {W S Arrata and L Iffy},
  year = {1971},
  doi = {10.1097/00006254-197110000-00001},
  url = {https://pubmed.ncbi.nlm.nih.gov/4950890/},
  note = {Source identifier: 4950890}
}