Rania Lutfi Marc Gelgon José Martinez Structuring and Querying Documents in an Audio Database Management System. 105-123 2004 24 Multimedia Tools Appl. 2 http://springerlink.metapress.com/index/10.1023/B:MTAP.0000036839.24141.9e db/journals/mta/mta24.html#LutfiGM04