Yannis Kotidis Pedro José Marrón Le Gruenwald Demetrios Zeinalipour-Yazti Eighth ACM International Workshop on Data Engineering for Wireless and Mobile Access, Mobide 2009, June 29, 2009, Providence, Rhode Island, USA, Proceedings MobiDE ACM 2009 db/conf/mobide/mobide2009.html 978-1-60558-712-7