D. Vrandecić, и A. Gangemi. Proceedings of the 1st International Workshop on Ontology content and evaluation in Enterprise, Montpellier, France, Springer, (октября 2006)
N. Guarino. Proceedings of the First International Conference on Formal Ontologies in Information Systems (FOIS), том 46 из Frontiers in AI and App., Trento, Italy, IOS-Press, (1998)