Gregory Hackmann Chien-Liang Fok Gruia-Catalin Roman Chenyang Lu Christopher K. Zuver Kent English John Meier Agile cargo tracking using mobile agents. 303 2005 conf/sensys/2005 SenSys http://doi.acm.org/10.1145/1098918.1098968 db/conf/sensys/sensys2005.html#HackmannFRLZEM05