@article{szabo2006phase,
  title={Phase transition in the collective migration of tissue cells: experiment and model},
  author={Szabo, Balint and Sz{\"o}ll{\"o}si, GJ and G{\"o}nci, B and Jur{\'a}nyi, Zs and Selmeczi, David and Vicsek, Tam{\'a}s},
  journal={Physical Review E},
  volume={74},
  number={6},
  pages={061908},
  year={2006},
  publisher={APS}
}