@misc{indiciae1b708127b5fc,
  title = {A nanogram method for hydroxyproline.},
  author = {R S Levine},
  year = {1973},
  doi = {10.1007/bf01218138},
  url = {https://pubmed.ncbi.nlm.nih.gov/4746433/},
  note = {Source identifier: 4746433}
}