Bernhard Stegmaier Richard Kuntschke Alfons Kemper StreamGlobe: adaptive query processing and optimization in streaming P2P environments. 88-97 2004 DMSN http://doi.acm.org/10.1145/1052199.1052214 conf/dmsn/2004 db/conf/dmsn/dmsn2004.html#StegmaierKK04