Mathias Lux Michael Granitzer Wolfgang Kienreich Vedran Sabol Werner Klieber Walter Sarka Cross Media Retrieval in Knowledge Discovery. 343-352 http://dx.doi.org/10.1007/978-3-540-30545-3_32 2004 conf/pakm/2004 PAKM db/conf/pakm/pakm2004.html#LuxGKSKS04