Angela Bonifati Alfredo Cuzzocrea Synopsis Data Structures for XML Databases: Models, Issues, and Research Perspectives. 20-24 2007 conf/dexaw/2007 DEXA Workshops http://doi.ieeecomputersociety.org/10.1109/DEXA.2007.133 db/conf/dexaw/dexaw2007.html#BonifatiC07