@article{small,
  title={Amino acids in comets and meteorites: stability under gamma radiation and preservation of the enantiomeric excess},
  author={Susana Iglesias-Groth,  Franco Cataldo, Ornella Ursini, and Arturo Manchado},
  journal={Mon. Not. R. Astron. Soc},
  volume={410},
  pages={1447–1453},
  year={2011},
  doi={doi:10.1111/j.1365-2966.2010.17526.x}
}