@misc{indiciaedd96409daea9,
  title = {[Estrus synchronization in heifers].},
  author = {W Busch and F Döcke and D Flick and F Litzke and H Köhler},
  year = {1972},
  url = {https://pubmed.ncbi.nlm.nih.gov/4124869/},
  note = {Source identifier: 4124869}
}