@inproceedings{CPX13,
  author        = {X. Chen and J. Pang and R. Xue},
  title         = {Constructing and comparing user mobility profiles for location-based services},
  booktitle     = {Proc.\ 28th ACM Symposium on Applied Computing (SAC'13)},
  publisher     = {ACM},
  year          = {2013},
  pages         = {261-266},
  url           = {http://satoss.uni.lu/jun/papers/SAC13.pdf}
}