title: bifocal sampling for skew-resistant join size estimation. authors: s ganguly , p gibbons , y matias , a silberschatz. venue: sigmod conference. year: 1996
title: matias , and a. silberschatz . bifocal sampling for skew-resistant join size estimation. authors: sg ggms , pb gibbons. venue: proceedings of the acm sigmod international conference on. year: nan