Shankar Pal Istvan Cseri Oliver Seeliger Michael Rys Gideon Schaller Wei Yu Dragan Tomic Adrian Baras Brandon Berg Denis Churin Eugene Kogan XQuery Implementation in a Relational Database System. 1175-1186 2005 conf/vldb/2005 VLDB http://www.vldb2005.org/program/paper/thu/p1175-pal.pdf db/conf/vldb/vldb2005.html#PalCSRSYTBBCK05