1. L.D. Ivanova, N.Kh. Abrikosov, E.I. Elagina, and V.D. Khvostikova, Izv. AN SSSR (Neorg. Mater.) 5, 1933 (1969).
2. V.K. Zaitsev, CRC Handbook of Thermoelectrics, ed. D.M. Rowe (New York: CRC, 1995), p. 299.
3. V.K. Zaitsev, S.A. Ktitorov, A.E. Kalyazin, N.D. Marchuk, and S.V. Ordin, Sov. Phys. Solid State 34, 2589 (1992).
4. E.N. Nikitin and V.K. Zaitsev, Izv. AN SSSR (Neorg. Mater.) 1, 1526 (1965).
5. F.Yu. Solomkin, V.K. Zaitsev, N.F. Kartenko, and A.S. Kolosova, Thermoelectrics and Their Applications (St. Petersburg: PIYaPh RAN, 2008), p. 257.