D. Psillos, P. Argirakis, I. Vlahavas, E. Hatzikraniotis, G. Bisdikian, I. Refanidis, I. Lefkos, K. Korobilis, D. Vrakas, L. Gallos, E. Petridou, I. Nikolaidis, “Composite Virtual-Lab Environment for Teaching Heat and Thermodynamics (in Greek)”, Proc. 2nd National Conference on Information and Communication Technologies in Education, 2000.