1. Volkov, B.A., Ryabova, L.I., and Khokhlov, D.R., Impurities of Variable Valence in Lead-Telluride-Based Solid Solutions, Usp. Fiz. Nauk, 2002, vol. 172, no. 8, pp. 875–906.
2. Novoselova, A.V. and Zlomanov, V.P., P-T-x diagrammy sostoyaniya sistem metal-khalkogen (P-T-x Phase Diagrams of Metal-Chalcogen Systems), Moscow: Nauka, 1987.
3. Abrikosov, N.Kh. and Shelimova, L.E., Poluprovodnikovye materialy na osnove soedinenii A IV B VI (IV-VI Semiconductor Materials), Moscow: Nauka, 1975.
4. Terzieff, P., Ipser, H., and Wachtel, E., Transition Metal-Chalcogen Systems: IX. Vanadium-Tellurium System—Phase Diagram and Magnetic Properties, J. Less-Common Met., 1986, vol. 119, no. 1, pp. 1–12.
5. Smith, J.F., The Te-V (Tellurium-Vanadium) System, J. Alloy Phase Diagrams, 1990, vol. 6, pp. 183–192.