Markus Zanker Sergiu Gordea Markus Jessenitschnig Michael Schnabl A Hybrid Similarity Concept for Browsing Semi-structured Product Items. 21-30 2006 conf/ecweb/2006 EC-Web http://dx.doi.org/10.1007/11823865_3 db/conf/ecweb/ecweb2006.html#ZankerGJS06