@misc{indiciae8733b4b21730,
  title = {Fertility awareness: jet-age rhythm method?},
  author = {C Djerassi},
  year = {1990},
  doi = {10.1126/science.2343313},
  url = {https://pubmed.ncbi.nlm.nih.gov/2343313/},
  note = {Source identifier: 2343313}
}