@misc{indiciaec3a0eeabd509,
  title = {A systematic method for introducing heavy atoms into a protein molecule.},
  author = {A Fenselau and D Koenig and D E Koshland and H G Latham and H Weiner},
  year = {1967},
  doi = {10.1073/pnas.57.6.1670},
  url = {https://pubmed.ncbi.nlm.nih.gov/5231402/},
  note = {Source identifier: 5231402}
}