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O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “VLEPpO: A Visual Language for Problem Representation”, 26th Workshop of the UK Planning and Scheduling Special Interest Group, Roman Bartak (Ed.), pp. 60 - 66, Prague, Czech Republic, 2007.
O. Hatzi, D. Vrakas, N. Bassiliades, D. Anagnostopoulos, I. Vlahavas, “Visual Representation of Web Service Composition Problems through VLEPpO”, International Workshop on Intelligent Web Based Tools, 19th IEEE International conference on Tools with Artificial Intelligence, Juan D. Velasquez (Ed.), pp. 42 - 49, Patras, Greece, 2007.
D. Vrakas, G. Tsoumakas, F. Kokkoras, N. Bassiliades, I. Vlahavas, D. Anagnostopoulos, “PASER: A Curricula Synthesis System based on Automated Problem Solving”, International Journal on Teaching and Case Studies, Inderscience, Vol. 1, Nos. 1/2, pp. 159-170, 2007.
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