P. Leenheer. Vrije Universiteit Brussel, FACULTY OF SCIENCE, Department of Computer
Science, Semantics Technology and Applications Research Lab, Belgium, (May 2009)
A. de Moor, P. Leenheer, and R. Meersman. Proceedings of the 14th International Conference on Conceptual Structures (ICCS 2006), volume 4068 of Lecture Notes in Computer Science, page 189-202. Springer, (2006)
P. Leenheer, and C. Debruyne. Proceedings of OTM Confederated International Workshops and Posters,
Monterrey, Mexico, November 9-14, 2008., Springer, (2008)
P. Leenheer. Proc. of On the Move to Meaningful Internet Systems Workshops (OTM2004)
(Ayia Napa, Cyprus), page 798--818. LNCS 3292, Springer Verlag, (2004)