D. Sulistyanintyas, and E. Kartini. “SYNTHESIS AND CHARACTERIZATION OF SUPERIONIC CONDUCTING GLASSES (AgI)x(Ag2S)x(AgPO3)1-2x”. Jurnal Sains Materi Indonesia, vol. 7, no. 3, June 2006, pp. 62-67, doi:10.17146/jsmi.2006.7.3.4843.