Nikolaus Augsten Michael H. Böhlen Curtis E. Dyreson Johann Gamper Approximate Joins for Data-Centric XML. 814-823 2008 ICDE http://dx.doi.org/10.1109/ICDE.2008.4497490 conf/icde/2008 db/conf/icde/icde2008.html#AugstenBDG08