Simon Sheu Nigel Wu Jyun-Bo Chen XJoin: a novel holistic twig matching scheme for XML data. 162-166 2005 conf/itre/2005 ITRE http://doi.ieeecomputersociety.org/10.1109/ITRE.2005.1503091 db/conf/itre/itre2005.html#SheuWC05