@misc{indiciae492758c3d658,
  title = {Directed evolution towards protease-resistant hirudin variants.},
  author = {Frank Wirsching and Martina Keller and Christian Hildmann and Daniel Riester and Andreas Schwienhorst},
  year = {2003},
  doi = {10.1016/j.ymgme.2003.09.007},
  url = {https://pubmed.ncbi.nlm.nih.gov/14654359/},
  note = {Source identifier: 14654359}
}