@misc{indiciae9d5576d0ef11,
  title = {Crystal structures that suggest late development of genetic code components for differentiating aromatic side chains.},
  author = {Xiang-Lei Yang and Francella J Otero and Robert J Skene and Duncan E McRee and Paul Schimmel and Llúis Ribas de Pouplana},
  year = {2003},
  doi = {10.1073/pnas.2136794100},
  url = {https://pubmed.ncbi.nlm.nih.gov/14671330/},
  note = {Source identifier: 14671330}
}