Blumenstock11'

@inproceedings{DBLP:conf/iconference/Blumenstock11,
  author    = {Joshua Evan Blumenstock},
  title     = {Using mobile phone data to measure the ties between nations},
  booktitle = {iConference},
  year      = {2011},
  pages     = {195-202},
  ee        = {http://doi.acm.org/10.1145/1940761.1940788},
  crossref  = {DBLP:conf/iconference/2011},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}

@proceedings{DBLP:conf/iconference/2011,
  title     = {iConference 2011, Inspiration, Integrity, and Intrepidity,
               Seattle, Washington, USA, February 8-11, 2011},
  booktitle = {iConference},
  publisher = {ACM},
  year      = {2011},
  isbn      = {978-1-4503-0121-3},
  bibsource = {DBLP, http://dblp.uni-trier.de}
}