Mike Hazas, Christian Kray, Hans-Werner Gellersen, Henoc Agbota, Gerd Kortuem, Albert Krohn. A relative positioning system for co-located mobile devices. In Kang G. Shin, David Kotz, Brian D. Noble, editors, Proceedings of the 3rd International Conference on Mobile Systems, Applications, and Services (MobiSys 2005), June 6-8, 2005, Seattle, Washington, USA. pages 177-190, ACM, 2005. [doi]
Abstract is missing.