@misc{indiciae1dbebdbcb590,
  title = {Evolution was chemically constrained.},
  author = {R J P Williams and J J R Fraústo Da Silva},
  year = {2003},
  doi = {10.1006/jtbi.2003.3152},
  url = {https://pubmed.ncbi.nlm.nih.gov/12468283/},
  note = {Source identifier: 12468283}
}