http://www.youtube.com/watch?v=z8c7jgxrMUw&feature=related VIDEO 1
http://www.youtube.com/watch?v=3yVDR_NAxZs&feature=related VIDEO 2
http://www.youtube.com/watch?v=Cf1bilWUcG0&feature=related VIDEO 3
http://www.youtube.com/watch?v=xoykLSV8oVs&feature=related PRESENTATION 2
http://www.latsis-foundation.org/gr/elibrary/1/35/book.html electronic book