Yannis Panagis Konstantinos Papakonstantinou Evangelos Sakkopoulos Athanasios K. Tsakalidis Web service workflow selection using system and network QoS constraints. 114-134 2008 4 Int. J. Web Eng. Technol. 1 http://dx.doi.org/10.1504/IJWET.2008.016107 db/journals/ijwet/ijwet4.html#PanagisPST08