Herget Josef Danube University Krems, Center for Knowledge and Information Management Dr.-Karl-Dorrek-Strasse 30 A-3500 Krems AT +43 2732 893 2332 +43 664 834 00 26 +43 2732 893 4335 josef.herget@donau-uni.ac.at http://www.herget.li http://www.donau-uni.ac.at/wim