@inproceedings{voigtmann2011a,
  address = {Seattle, USA.},
  author = {Voigtmann, Christian and Lau, Sian Lun and David, Klaus},
  booktitle = {2011 IEEE International Conference on Pervasive Computing and Communications Workshops (PERCOM Workshops)},
  interhash = {458f9e64c984aa4a88355169febfa08e},
  intrahash = {b2cf800a5485bec8b65164924f5e1b56},
  month = {March 21-25},
  pages = {403-408},
  publisher = {IEEE},
  title = {An Approach to Collaborative Context Prediction},
  year = 2011
}

@inproceedings{voigtmann2011b,
  address = {Budapest, Hungary},
  author = {Voigtmann, Christian and Lau, Sian Lun and David, Klaus},
  booktitle = {Fourth Conference on Context Awareness for Proactive Systems: CAPS2011},
  interhash = {01e008e6df63884fe3119e0729803737},
  intrahash = {49934f1d124d0b4b97fd066ea0b83195},
  month = {15-16 May},
  title = {A Collaborative Context Prediction Technique},
  year = 2011
}