Dirk Grunwald Richard Han Eyal de Lara Carla Schlatter Ellis Proceedings of the 6th International Conference on Mobile Systems, Applications, and Services (MobiSys 2008), Breckenridge, CO, USA, June 17-20, 2008 MobiSys ACM 2008 978-1-60558-139-2 db/conf/mobisys/mobisys2008.html