@misc{indiciae3b6b0991ae2a,
  title = {15N nuclear magnetic resonance investigations on amino acids.},
  author = {F Blomberg and W Maurer and H Rüterjans},
  year = {1976},
  doi = {10.1073/pnas.73.5.1409},
  url = {https://pubmed.ncbi.nlm.nih.gov/5722/},
  note = {Source identifier: 5722}
}