@misc{indiciae6dca9f0429d5,
  title = {Improved method for progesterone determination in milk-fat.},
  author = {R Claus and E Rattenberger},
  doi = {10.1016/s0007-1935(17)32795-1},
  url = {https://pubmed.ncbi.nlm.nih.gov/487058/},
  note = {Source identifier: 487058}
}