Georgios Paliouras, Christos Papatheodorou, Vangelis Karkaletsis, Panayiotis Tzitziras, Constantine D. Spyropoulos, Learning communities of the acai99 web site visitors, In Workshop on Machine learning in user modeling at ACAI 1999, (Pages: 65–73), 1999.
Vangelis Karkaletsis, Constantine D. Spyropoulos, George Petasis, Named Entity Recognition from Greek texts: the GIE Project, Chapter in Advances in Intelligent Systems: Concepts, Tools and Applications, International Series on Microprocessor-Based and Intelligent Systems Engineering, volume 21, Springer, Dordrecht, (Pages: 131–142), 1999.[url]
Vangelis Karkaletsis, Constantine D. Spyropoulos, Towards a User-Friendly Information Society: the role of Software Globalisation, User Modelling and Information Extraction Technologies, In 1st Panhelennic Conference on New Information Technology (NIT) 1998, Athens, Greece, October 8-10, 1998.
George Vouros, Vangelis Karkaletsis, Constantine D. Spyropoulos, Documentation and Translation, In Software Without Frontiers: A multi-platform, multi-cultural, multi-nation approach, J. Wiley & Sons, (Pages: 167–202), 1997.