Martin Hepp Daniel Bachlechner Katharina Siorpaes OntoWiki: community-driven ontology engineering and ontology usage based on Wikis. 143-144 2006 conf/wikis/2006 Int. Sym. Wikis http://doi.acm.org/10.1145/1149453.1149487 db/conf/wikis/wikis2006.html#HeppBS05