@misc{indiciae13c505722672,
  title = {Direct selection for sequences encoding proteases of known specificity.},
  author = {T A Smith and B D Kohorn},
  year = {1991},
  doi = {10.1073/pnas.88.12.5159},
  url = {https://pubmed.ncbi.nlm.nih.gov/2052595/},
  note = {Source identifier: 2052595}
}