@article{small,
  title={A Thermodynamic Basis for Prebiotic Amino Acid Synthesis and the Nature of the First Genetic Code},
  author={Paul G. Higgs and Ralph E. Pudritz},
  journal={Mary Ann Liebert, Inc.},
  volume={9},
  pages={5},
  year={2009},
  doi={10.1089=ast.2008.0280}
}