@misc{indiciae08fac24e8823,
  title = {Penicillin dipeptides.},
  author = {A M Felix and J Unowsky and J Bontempo and R I Fryer},
  year = {1968},
  doi = {10.1021/jm00311a002},
  url = {https://pubmed.ncbi.nlm.nih.gov/5697100/},
  note = {Source identifier: 5697100}
}