Calorimetric studies of chalcogenide glasses in the system Se-S O. El-Shazly, T. Ramadan, N. El-Anany, H. A. Motaweh and E. F. El-Wahidy Eur. Phys. J. AP, 13 3 (2001) 161-165 Published online: 15 March 2001 DOI: 10.1051/epjap:2001129