Alan Halverson Vanja Josifovski Guy M. Lohman Hamid Pirahesh Mathias Mörschel ROX: Relational Over XML. 2004 conf/vldb/2004 VLDB db/conf/vldb/vldb2004.html#HalversonJLPM04 264-275 http://www.vldb.org/conf/2004/RS7P2.PDF