Gabriela Vulcu Sami Bhiri Manfred Hauswirth ZhangBing Zhou A User-Centric Service Composition Approach. 160-169 2008 OTM Workshops http://dx.doi.org/10.1007/978-3-540-88875-8_35 conf/otm/2008-w db/conf/otm/otm2008-w.html#VulcuBHZ08