@article{small,
  title={Truncated hexa-octahedral magnetite crystals in ALH84001: presumptive biosignatures},
  author={Thomas-Keprta, Kathie L and Clemett, Simon J and Bazylinski, Dennis A and Kirschvink, Joseph L and McKay, David S and Wentworth, Susan J and Vali, Hojatollah and Gibson, Everett K and McKay, Mary Fae and Romanek, Christopher S},
  journal={Proceedings of the National Academy of Sciences},
  volume={98},
  pages={2164--2169},
  year={2001},
  doi={doi.org/10.1073/pnas.051500898}
}