@misc{indiciae50acebe419b8,
  title = {Improved penicillin selective enzyme electrode.},
  author = {L F Cullen and J F Rusling and A Schleifer and G J Papariello},
  year = {1974},
  doi = {10.1021/ac60349a007},
  url = {https://pubmed.ncbi.nlm.nih.gov/4413798/},
  note = {Source identifier: 4413798}
}