F. Parreiras, S. Staab, and 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, page 439--448. New York, NY, USA, ACM, (2007)
S. Cranefield, and J. Pan. International Journal of Human-Computer Studies, 65 (7):
595 - 609(2007)Knowledge representation with ontologies: Present challenges - Future possibilities.