Christian Grimme Joachim Lepping Alexander Papaspyrou Benefits of Job Exchange between Autonomous Sites in Decentralized Computational Grids. 25-32 2008 CCGRID http://doi.ieeecomputersociety.org/10.1109/CCGRID.2008.55 conf/ccgrid/2008 db/conf/ccgrid/ccgrid2008.html#GrimmeLP08