@misc{indiciae722b3d520478,
  title = {A titration method for bovine trypsin.},
  author = {R J Vaughan and F H Westheimer},
  year = {1969},
  doi = {10.1016/0003-2697(69)90314-5},
  url = {https://pubmed.ncbi.nlm.nih.gov/5792567/},
  note = {Source identifier: 5792567}
}