@inproceedings{PZ17b,
  author        = {J. Pang and Y. Zhang},
  title         = {Quantifying location sociality},
  booktitle     = {Proc.\ 28th ACM Conference on Hypertext and Social Media (HT'17)},
  publisher     = {ACM Press},
  year          = {2017},
  pages         = {145-154}
}