R. F. Kadrgulov, A. I. Livshits, R. F. Yakshibaev, “Structural features and diffusive motion of copper ions in $\mathrm{Ag}_{2}\mathrm{Se}$–$\mathrm{Cu}_{2}\mathrm{Se}$ superionic conducting alloys from NMR data”, Fizika Tverdogo Tela, 34:7 (1992), 2144–2147
