@misc{indiciae8d516def8083,
  title = {A cross-linked copolypeptide with increased affinity for cations.},
  author = {Y D Kim and I M Klotz},
  year = {1972},
  doi = {10.1002/bip.1972.360110209},
  url = {https://pubmed.ncbi.nlm.nih.gov/5016556/},
  note = {Source identifier: 5016556}
}