@article{realtimemultilevelcrowdtrackingusing,
  title = {Realtime Multilevel Crowd Tracking using Reciprocal Velocity Obstacles},
  author = {Aniket Bera and Dinesh Manocha},
  year = {2014},
  eprint = {1402.2826},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1402.2826v1},
}