I. Horichok, M. Galushchak, T. Semko, O. Matkivskiy, and R. Dzumedzey, “Electrotechnical Model of Conductivity of Lead Telluride, Obtained by Method of Powder Pressing”, Phys.Chem.Sol.State, vol. 19, no. 2, pp. 147–150, Jun. 2018.