Shender, I.O., et al. “The Role of Heterovalent P+5 Si+4 Substitution on the Microhardness of Ag6+x(P1-xSix)S5I Single Crystals”. Physics and Chemistry of Solid State, vol. 27, no. 2, June 2026, pp. 449-55, doi:10.15330/pcss.27.2.449-455.