Tomas Vitvar Michal Zaremba Matthew Moran Maciej Zaremba Dieter Fensel SESA: Emerging Technology for Service-Centric Environments. 56-67 2007 24 IEEE Software 6 http://doi.ieeecomputersociety.org/10.1109/MS.2007.178 db/journals/software/software24.html#VitvarZMZF07