BOSCA, M., E. CULEA, L. BOLUNDUT, P. PASCUTA, V. POP, N. TOTHAZAN, and I. VIDA-SIMITI. “ROLE OF Gd³⁺: Ag CO-DOPING ON STRUCTURAL AND OPTICAL PROPERTIES OF LEAD TELLURITE GLASS CERAMICS”. Studia Universitatis Babeș-Bolyai Physica, vol. 60, no. 2, Dec. 2015, pp. 25-32, http://193.231.18.162/index.php/subbphysica/article/view/5935.