Massimo Cafaro Italo Epicoco Maria Mirto Daniele Lezzi Giovanni Aloisio The Grid Resource BrokerWorkflow Engine. 725-732 2007 conf/gcc/2007 GCC http://doi.ieeecomputersociety.org/10.1109/GCC.2007.120 db/conf/gcc/gcc2007.html#CafaroEMLA07