Dario Bottazzi Antonio Corradi Rebecca Montanari AGAPE: a Location-aware Group Membership Middleware for Pervasive Computing Environments. 1185-1192 http://doi.ieeecomputersociety.org/10.1109/ISCC.2003.1214274 2003 conf/iscc/2003 ISCC db/conf/iscc/iscc2003.html#BottazziCM03