@article{sim2012modeling,
  title = "Modeling and design by hierarchical natural moves",
  author = "Sim, Adelene YL and Levitt, Michael and Minary, Peter",
  year = "2012",
  journal = "Proceedings of the National Academy of Sciences",
  number = "8",
  pages = "2890--2895",
  publisher = "National Acad Sciences",
  volume = "109",
}