Anastasios Gounaris Jim Smith Norman W. Paton Rizos Sakellariou Alvaro A. A. Fernandes Paul Watson Adapting to Changing Resource Performance in Grid Query Processing. 30-44 2005 conf/dmg/2005 DMG http://dx.doi.org/10.1007/11611950_4 db/conf/dmg/dmg2005.html#GounarisSPSFW05