Dieter Fensel Jürgen Angele Stefan Decker Michael Erdmann Hans-Peter Schnurr Steffen Staab Rudi Studer Andreas Witt On2broker: Semantic-Based Access to Information Sources at the WWW. 1999 conf/ijcai/1999iii Intelligent Information Integration http://SunSITE.Informatik.RWTH-Aachen.DE/Publications/CEUR-WS/Vol-23/fensel-ijcai99-iii.pdf db/conf/ijcai/ijcai99iii.html#FenselADESSSW99