Alberto Belussi Carlo Combi Sara Migliorini Barbara Oliboni A Geographic, Multimedia, and Temporal Data Model for Semistructured Data. 463-467 2005 conf/dexaw/2005 DEXA Workshops http://dx.doi.org/10.1109/DEXA.2005.16 db/conf/dexaw/dexaw2005.html#BelussiCMO05