@misc{indiciae1266ffe75441,
  title = {Internal standards for amino acid analysis.},
  author = {J F Riordan and R W Giese},
  year = {1977},
  doi = {10.1016/0076-6879(77)47005-8},
  url = {https://pubmed.ncbi.nlm.nih.gov/927189/},
  note = {Source identifier: 927189}
}