@misc{indiciaecfc13c71372b,
  title = {Changes in the frequency of marital intercourse from panel data.},
  author = {J R Udry},
  year = {1980},
  doi = {10.1007/bf01541357},
  url = {https://pubmed.ncbi.nlm.nih.gov/7416945/},
  note = {Source identifier: 7416945}
}