@article{abnormaleventdetectionandlocationfor,
  title = {Abnormal Event Detection and Location for Dense Crowds using Repulsive Forces and Sparse Reconstruction},
  author = {Pei Lv and Shunhua Liu and Mingliang Xu and Bing Zhou},
  year = {2018},
  eprint = {1808.06749},
  archivePrefix = {arXiv},
  url = {http://arxiv.org/abs/1808.06749v1},
}