@unpublished{schulte2012smutationalrobustness,
  author={Eric Schulte and Zachary P. Fry and Ethan Fast and Stephanie Forrest and Westley Weimer},
  title={Software Mutational Robustness: Bridging The Gap Between Mutation Testing and Evolutionary Biology},
  note={http://arxiv.org/abs/1204.4224},
  month={April},
  year={2012}
}