V. Kamtsiou, A. Naeve, L. Stergioulas, and D. Pappa. Proceedings of the 6th IEEE International Conference on Advanced Learning Technologies (ICALT 2006), (July 2006)
M. Lytras, and A. Naeve. Advances of the Semantic Web for E-learning: Expanding Learning Frontiers, Special Issue of the British Journal of Educational Technology, 37 (3):
479-491(2006)