Anne H. H. Ngu Banchong Harangsri John Shepherd Query Size Estimation for Joins Using Systematic Sampling. 237-275 2004 15 Distributed and Parallel Databases 3 http://dx.doi.org/10.1023/B:DAPD.0000018573.35050.25 db/journals/dpd/dpd15.html#NguHS04