Zygmunt J. Haas Samir R. Das Ravi Jain Proceedings of the 10th Annual International Conference on Mobile Computing and Networking, MOBICOM 2004, 2004, Philadelphia, PA, USA, September 26 - October 1, 2004 MOBICOM ACM 2004 db/conf/mobicom/mobicom2004.html 1-58113-868-7