1. J. C. Fisher, J. Appl. Phys.,22, No. 1, 74?85 (1951).
2. B. S. Bokshtein, Ch. V. Kopetskii, and L. S. Shvindlerman, Thermodynamics and Kinetics of Grain Boundaries in Metals [in Russian], Moscow (1986).
3. B. Ya. Lyubov, Diffusion Processes in Inhomogeneous Solid-State Media [in Russian], Moscow (1981).
4. K. P. Gurov, A. M. Gusak, V. V. Kondrat'ev, and F. A. Kotenev, Fiz. Met. Metalloved.,62, No. 1, 35?42 (1986).
5. L. M. Klinger, I. R. Kogai, and B. B. Straumal, Fiz. Met. Metalloved.,53, No. 4, 780?786 (1982).