Augusto Ciuffoletti Antonio Congiusta Gracjan Jankowski Michal Jankowski Ondrej Krajicek Norbert Meyer Grid Infrastructure Architecture: A Modular Approach from CoreGRID. 72-84 2007 WEBIST (Selected Papers) http://dx.doi.org/10.1007/978-3-540-68262-2_6 conf/webist/2007sp db/conf/webist/webist2007sp.html#CiuffolettiCJJKM07