@misc{indiciae33015d4850b6,
  title = {[A decrease in twin births and factors involved in multiple pregnancy].},
  author = {N G Lipovetskaia and Iu A Iampol'skaia},
  year = {1975},
  url = {https://pubmed.ncbi.nlm.nih.gov/1228064/},
  note = {Source identifier: 1228064}
}