@article{Physics.3.77,
  title = {Speeding up in a crowd},
  author = {Zhou, Huan-Xiang},
  journal = {Physics},
  volume = {3},
  issue = {},
  pages = {77},
  numpages = {1},
  year = {2010},
  month = {Sep},
  doi = {10.1103/Physics.3.77},
  url = {http://link.aps.org/doi/10.1103/Physics.3.77},
  publisher = {American Physical Society}
}