Benz, Dominik, Hotho, Andreas ; Hinneburg, Alexander: Position Paper: Ontology Learning from Folksonomies.. In: LWA 2007: Lernen - Wissen - Adaption, Halle, September 2007, Workshop Proceedings (LWA) : Martin-Luther-University Halle-Wittenberg, 2007. - ISBN 978-3-86010-907-6, S. 109-112

Heylighen, Francis, Bootstrapping knowledge representations: from entailment meshes via semantic nets to learning webs, in: Kybernetes 30 5/6 (2001), S. 691--722.