G. Wohlgenannt, A. Weichselbraun, and A. Scharl. Twentieth International Workshop on Database and Expert Systems Application
(DEXA 2009); Eighth International Workshop on Web Semantics (WebS'09), page 94--98. Linz, Austria, (September 2009)
A. Weichselbraun, A. Scharl, and W. Liu. Nineteenth International Workshop on Database and Expert Systems
Application (DEXA 2008); Seventh International Workshop on Web Semantics
(WebS'08), page 197-201. Turin, Italy, IEEE Computer Society Press, (September 2008)