@misc{indiciae7b7314a44c76,
  title = {Electrostatic effects on polyproline I-II transitions.},
  author = {G Holzwarth and K Backman},
  year = {1969},
  doi = {10.1021/bi00831a018},
  url = {https://pubmed.ncbi.nlm.nih.gov/5781024/},
  note = {Source identifier: 5781024}
}