@unpublished{TUW-237822, author = {Mayr, Markus}, title = {ODbL - Open Database License}, year = {2015}, keywords = {OpenStreetMap, OpenDatabase License, Legal Ontologies, RuleML, MetaLex}, note = {talk: Internationales Rechtsinformatik Symposion 2015, Salzburg; 2015-02-26 -- 2015-02-28} }