@misc{indiciaecd69b6a15c7a,
  title = {Four-fold structural repeat in the acid proteases.},
  author = {T L Blundell and B T Sewell and A D McLachlan},
  year = {1979},
  doi = {10.1016/0005-2795(79)90194-6},
  url = {https://pubmed.ncbi.nlm.nih.gov/44681/},
  note = {Source identifier: 44681}
}