1. Ontologies: principles, methods and applications;Uschold;Knowledge Eng Rev,1996
2. Gruninger M, Fox MS. Methodology for the design and evaluation of ontologies, workshop on basic ontological issues in knowledge sharing, IJCAI-95, Montreal, 1995.
3. Kietz J-U, Volz R, Maedche A. Extracting a domain-specific ontology from a Corporate Intranet. In: Proceedings of the fourth conference on computational natural language learning and of the second learning language in logic workshop, Lisbon, 2000.
4. Fernandez M, Gomez-Perez A, Juristo N. Methontology: from ontological arts towards ontological engineering. In: Proceedings of the AAAI-97 spring symposium series on ontological engineering, Stanford, USA, 1997.
5. 〈http://www.kbsi.com/〉.