2006, Article in monograph or in proceedings (Won, D.; Kim, S. (ed.), Proc. 8th Annual International Conference on Information Security and Cryptology, ICISC'05, pp. 186-198)
2005, Article in monograph or in proceedings (Sasaki, Ryoichi; Qing, Sihan; Okamoto, Eiji (ed.), Proceedings of the 20th IFIP TC11 International Information Security Conference, pp. 564-576)
2004, Article in monograph or in proceedings (Hutter, D.; M�ller, G.; Stephan, W. (ed.), Proceedings of the 1st international conference on security in pervasive computing, pp. 213-226)
2002, Article in monograph or in proceedings (VerifiCard'02: Informal proceedings of the annual Verificard meeting, 7th-9th January 2002, Centre International de Rencontres Mathématiques in Marseille, pp. 1-13)
2001, Article in monograph or in proceedings (Buchberger, Bruno; Caprotti, Olga (ed.), MKM'2001: Electronic Proceedings of the First International Workshop on Mathematical Knowledge Management RISC, A-4232 Schloss Hagenberg, September 24-26, 2001, pp. 1-18)
2001, Article in monograph or in proceedings (Campbell, J.A. (ed.), Artificial Intelligence and Symbolic Computation: International Conference AISC 2000 Madrid, Spain, July 17–19,2000 Revised Papers, pp. 53-64)