conf/sigmod/88 M. Muralikrishna David J. DeWitt Equi-Depth Histograms For Estimating Selectivity Factors For Multi-Dimensional Queries. 28-36 1988 conf/sigmod/88 SIGMOD Conference db/conf/sigmod/sigmod88.html#MuralikrishnaD88 http://doi.acm.org/10.1145/50202.50205 SIGMOD88/P028.PDF ... conf/sigmod/Guttman84 journals/is/LiouY77 journals/tods/NievergeltHS84 conf/sigmod/Robinson81 ... conf/sigmod/SelingerACLP79 conf/sigmod/Piatetsky-ShapiroC84 books/aw/Zipf49