H. Bih, L. Bih, M. Azrour, B. Manoun, and P. Lazor, “Some Physical, Chemical and Electrical Properties of the Polyphosphate LiMII 2(PO3)5 (M=Cu, Zn, Cd, Ba, Pb) Glasses”, J. Adv. Therm. Sci. Res., vol. 1, no. 2, pp. 51–56, Jan. 2015.