Mauro Andreolini Claudia Canali Riccardo Lancellotti Impact of request dispatching granularity in geographically distributed Web systems. 45-52 2007 conf/nca/2007 NCA http://doi.ieeecomputersociety.org/10.1109/NCA.2007.28 db/conf/nca/nca2007.html#AndreoliniCL07