Mohamed Hamdi and Noureddine Boudriga, «Extended Relational Algebra: Application to computer network security», Conference of the Tunisian Mathematical Society, March 20-22; 2005.

Noureddine Boudriga, «Digital certification practice and achievement in Tunisia», Tunisian-Italian workshop on Information Security and digital certification (TIWIS 2003), May 21-22, 2003, Tunis.

Sihem Guemara El Fatmi and Noureddine Boudriga, «E-government Security: A metric-based Approach»,Tunisian-Italian workshop on Information Security and digital certification (TIWIS 2003), May 21-22, 2003, Tunis.

Amel Meddeb, Noureddine Boudriga, and Sihem Guemara El Fatmi, «A Neural-based model for distributed intrusion detection», Tunisian-Italian workshop on Information Security and digital certification (TIWIS 2003), May 21-22, 2003, Tunis.

Mohamed Hamdi and Noureddine Boudriga, «Using wavelet theory and Lipschitz Regularity to detect attacks», Tunisian-Italian workshop on Information Security and digital certification (TIWIS 2003), May 21-22, 2003, Tunis.

Noureddine Boudriga, «E-commerce: Technical issues and digital security» (un Arabic), Workshop on e-commerce and law, Tunisian Institute of Law, Feb. 27th, 2003, Tunis.

Noureddine Boudriga, «Next generation networks and mobile communication», web-applications and regulatory issues, National authority for telecommunication, June 20-22, 2002, Tunis, Tunisia.

Noureddine Boudriga, «Next generation networks: Concepts and services», Workshop on IP technologies and Applications, ITU Arab Centre of Excellence, Jun 17-19, 2002, Tunis, Tunisia.

Noureddine Boudriga, «E-commerce: concepts and applications to the Tunisian case» (in Arabic), Tunisian Journal of Management control, vol. 13, pp.55-665, 2002.

Noureddine Boudriga and Sihem Guemara El Fatmi, «Formal protocol description : Model and Validation», 3rd Int. Seminar on Relational Methods in Computer Science, RelMiCS, Hammamet, Tunisia, June 1997. pp.187-203.