Denis Rinfret Patrick E. O'Neil Elizabeth J. O'Neil Bit-Sliced Index Arithmetic. 47-57 2001 SIGMOD Conference db/conf/sigmod/sigmod2001.html#RinfretOO01 http://doi.acm.org/10.1145/375663.375669 http://www.acm.org/sigs/sigmod/sigmod01/eproceedings/papers/Research-Rinfret-et-al.pdf