George H. L. Fletcher Dirk Van Gucht Yuqing Wu Marc Gyssens Sofia Brenes Jan Paredaens A Methodology for Coupling Fragments of XPath with Structural Indexes for XML Documents. 48-65 2007 conf/dbpl/2007 DBPL http://dx.doi.org/10.1007/978-3-540-75987-4_4 db/conf/dbpl/dbpl2007.html#FletcherGWGBP07