Abhinandan Das Johannes Gehrke Mirek Riedewald Approximate Join Processing Over Data Streams. 40-51 2003 conf/sigmod/2003 SIGMOD Conference db/conf/sigmod/sigmod2003.html#DasGR03 http://doi.acm.org/10.1145/872757.872765 http://www.acm.org/sigmod/sigmod03/eproceedings/papers/r02p02.pdf