Hongbing Wang Junjie Xu Peicheng Li Incomplete Preference-driven Web Service Selection. 75-82 2008 IEEE SCC (1) http://doi.ieeecomputersociety.org/10.1109/SCC.2008.49 conf/IEEEscc/2008 db/conf/IEEEscc/scc2008.html#WangXL08