Shunsuke Yura Kazuhiro Kiwata Atsushi Nakano Tomotaka Uchihashi Atsushi Kanai Service Matching and Collaboration for Electronic Commerce. 169-175 2001 ISADS http://computer.org/proceedings/isads/1065/10650169abs.htm db/conf/isads/isads2001.html#YuraKNUK01