The European Taxonomy Syllabus: A multi-lingual, multi-level ontology framework to untangle the web of European legal terminology. - Gianmaria Ajani; Guido Boella; Luigi Di Caro; Livio Robaldo; Llio Humphreys; Sabrina Praduroux; Piercarlo Rossi; Andrea Violato (Appl. Ontology, 2016)