1. A. V. Byalozhensiii, M. S. Tsirlin, and B. I. Krasilov, High-Temperature Corrosion and the Protection of Very Refractory Metals [in Russian], Atomizdat, Moscow (1977).
2. E. V. Visil’eva and A. S. Gorbova, “Research on heat-resistant alloys of niobium with yttrium with compound doping,” Tr. Mosk. Vyssh. Tekhn. Uch., No. 38, 23–30 (1980).
3. V. V. Baron, “High-temperature niobium alloys,” in: Physical Chemistry of Rare-Metal Alloys [in Russian], Nauka, Moscow (1981), pp. 234–236.
4. G. G. Maksimovich, V. S. Pavlina, B. N. Stakhnyak, and R. D. Vengrenovich, “Heat resistance in multicomponent coatings on niobium alloys,” Fiz. Khim. Mekh. Mater.,16, No. 6, 27–30 (1980).
5. V. F. Shatinskii, S. V. Rybakov, M. S. Goikhman, and É. N. Volin, “Diffusion coatings for raising the heat resistance of niobium alloys,” Zashchit. Pokr. Metall., No. 14, 58–61 (1980).