Introducing JOUNBO: A New Advanced Online Journal and Newspaper Browser. - Petros Lalos; George S. Tombras (J. Multim., 2008)

E-snakes and ladders: a hypermedia educational environment for portable devices. - Petros Lalos; Fotis Lazarinis; Dimitris Kanellopoulos (Int. J. Mob. Learn. Organisation, 2009)