S. Cranefield, und J. Pan. International Journal of Human-Computer Studies, 65 (7):
595 - 609(2007)Knowledge representation with ontologies: Present challenges - Future possibilities.
F. Parreiras, S. Staab, und A. Winter. Proceedings of the 6th joint meeting of the European Software Engineering Conference and the ACM SIGSOFT International Symposium on Foundations of Software Engineering, 2007, Dubrovnik, Croatia, September 3-7, 2007, Seite 439--448. New York, NY, USA, ACM, (2007)