Cédric du Mouza Philippe Rigaux Michel Scholl On-line Aggregation and Filtering of Pattern-based Queries. 333-342 2006 conf/ssdbm/2006 SSDBM http://doi.ieeecomputersociety.org/10.1109/SSDBM.2006.37 db/conf/ssdbm/ssdbm2006.html#MouzaRS06