1. A. G. Kesarev, V. V. Kondrat’ev, and I. L. Lomaev, “To the theory of grain-boundary diffusion in nanostructured materials,” Phys. Met. Metallogr. 109, 329–336 (2010).
2. R. Z. Valiev and I. V. Aleksandrov, Nanostructured Materials Obtained by Severe Plastic Deformation (Logos, Moscow, 2000) [in Russian].
3. A. A. Nasarov and R. R. Mulyukov, “Nanostructured materials,” in Handbook of Nanoscience, Engineering, and Technology, Ed. by W. A. Goddart et al. (CRC Press, Boca Raton, FL, 2002).
4. M. L. Zehetbauer, G. Steiner, E. Schafler, A. Korznikov, and E. Korznikova, “Deformation induced vacancies with SPD: Measurements and modeling,” Mater. Sci. Forum 503–504, 57–64 (2006).
5. Yu. R. Kolobov and R. Z. Valiev, Grain-Boundary Diffusion and Properties of Nanostructured Materials (Nauka, Novosibirsk, 2001) [in Russian].