@inproceedings{2006Constraint,
  author    = {Urs Bischoff and
               Martin Strohbach and
               Mike Hazas and
               Gerd Kortuem},
  title     = {Constraint-Based Distance Estimation in Ad-Hoc Wireless Sensor Networks.},
  booktitle = {Wireless Sensor Networks, Third European Workshop, EWSN
               2006, Zurich, Switzerland, February 13-15, 2006, Proceedings},
  year      = {2006},
  pages     = {54-68},
  publisher = {Springer},
  series    = {Lecture Notes in Computer Science},
  volume    = {3868},
  year      = {2006},
  isbn      = {3-540-32158-6},
}