Wang-Chien Lee Jianliang Xu Jianzhong Li Fabrizio Silvestri Special Section: Scalable information systems. 51-52 2009 25 Future Generation Comp. Syst. 1 http://dx.doi.org/10.1016/j.future.2008.07.012 db/journals/fgcs/fgcs25.html#LeeXLS09