@inproceedings{LEMMC08:opportunistic,
  author = {Nicholas T. Lane, Shane B. Eisenman, Mirco Musolesi, Emiliano Miluzzo and Andrew T. Campbell},
  title = {{Urban Sensing Systems: Opportunistic or Participatory?}},
  booktitle = {Proceedings of the ACM SIGMOBILE HotMobile'08},
  year = {2008},
  month= {February},
  publisher = {ACM Press},
  address = {Napa Valley, California, USA},
 }