S. Auer, and J. Lehmann. Proceedings of the ESWC (2007), volume 4519 of Lecture Notes in Computer Science, page 503--517. Berlin / Heidelberg, Springer, (2007)
M. Jonsson. Proceedings of the 2007 International Conference on Mobile Data Management, page 304--308. Washington, DC, USA, IEEE Computer Society, (2007)
F. Kargl, S. Geßler, and F. Flerlage. Ubiquitous Computing Systems, volume 4836 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-540-76772-5_9.(2010)
A. Papapostolou, and H. Chaouchi. NETWORKING 2009, volume 5550 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/978-3-642-01399-7_19.(2009)
V. Otsason, A. Varshavsky, A. LaMarca, and E. de Lara. UbiComp 2005: Ubiquitous Computing, volume 3660 of Lecture Notes in Computer Science, Springer Berlin / Heidelberg, 10.1007/11551201_9.(2005)