J. Leon Zhao George W. Brown Michael J. Carey Akhil Kumar James C. Spohrer Mohan Tanniru Services Science: Services Innovation Research & Education. 2005 conf/IEEEscc/2005 IEEE SCC http://doi.ieeecomputersociety.org/10.1109/SCC.2005.90 db/conf/IEEEscc/scc2005.html#ZhaoBCKST05