@book {2,
	title = {Methods and Applications of Artificial Intelligence Third Helenic Conference on AI, SETN 2004},
	series = {Lecture Notes in Computer Science},
	volume = { 3025},
	year = {2004},
	publisher = {Springer Verlag},
	organization = {Springer Verlag},
	isbn = {978-3-540-21937-8},
	url = {http://www.springer.com/computer/artificial/book/978-3-540-21937-8},
	author = {G. Vouros and T. Panayiotopoulos}
}
