NOY, Natalya F., McGUINESS, Deborah L. Ontology development 101: a guide to creating your first ontology [online]. March 2001 [cit. 2013-07-16]. 25 s. Stanford Knowledge Systems Laboratory Technical Report KSL-01-05 and Stanford Medical Informatics Technical Report SMI-2001-0880. Dostupné z: http://protege.stanford.edu/publications/ontology_development/ontology10... a také http://www-ksl.stanford.edu/people/dlm/papers/ontology-tutorial-noy-mcgu....