Kesheng Wu Kurt Stockinger Arie Shoshani Breaking the Curse of Cardinality on Bitmap Indexes. 348-365 2008 SSDBM http://dx.doi.org/10.1007/978-3-540-69497-7_23 conf/ssdbm/2008 db/conf/ssdbm/ssdbm2008.html#WuSS08