@article{small,
  title={The radioracemization of isovaline. Cosmochemical implications},
  author={William A. Bonner and Neal E. Blair and Richard M. Lemmon and Jose J. Flores and Glenn E. Pollock},
  journal={Geochimica et Cosmochimica Acta},
  volume={43},
  pages={1841-1846},
  year={1979}
}