@misc{indiciaebf64cc14a548,
  title = {Amino acid difference formula to help explain protein evolution.},
  author = {R Grantham},
  year = {1974},
  doi = {10.1126/science.185.4154.862},
  url = {https://pubmed.ncbi.nlm.nih.gov/4843792/},
  note = {Source identifier: 4843792}
}