Mark Chang Jackson He Wei-Tek Tsai Bingnan Xiao Yinong Chen UCSOA: User-Centric Service-Oriented Architecture. 248-255 2006 conf/icebe/2006 ICEBE http://doi.ieeecomputersociety.org/10.1109/ICEBE.2006.103 db/conf/icebe/icebe2006.html#ChangHTXC06