Marcos Dias de Assunção Krishna Nadiminti Srikumar Venugopal Tianchi Ma Rajkumar Buyya An Integration of Global and Enterprise Grid Computing: Gridbus Broker and Xgrid Perspective. 406-417 2005 conf/gcc/2005 GCC http://dx.doi.org/10.1007/11590354_50 db/conf/gcc/gcc2005.html#AssuncaoNVMB05