L. Liu, E. Yu, and J. Mylopoulos. 2nd Symposium on Requirements Engineering for Information Security(SREIS 02). Raleigh, Raleigh, North Carolina, (October 2002)
H. Mouratidis, P. Giorgini, and G. Manson. Proceedings of the KES 2003 Invited Session Ontology and Multiagent Systems Desing (OMASD'03), University of Oxford, United Kingdom, (September 2003)