1. O. V. Klyavin, N. P. Likhodedov, and A. N. Orlov, Prog. Surf. Sci. 33, 259 (1990).
2. O. V. Klyavin, The Physics of Plasticity of Crystals at Liquid-Helium Temperatures (Nauka, Moscow, 1987) [in Russian].
3. O. V. Klyavin, Fiz. Tverd. Tela (St. Petersburg) 35(3), 513 (1993) [Phys. Solid State 35 (3), 261 (1993)].
4. O. V. Klyavin, B. A. Mamyrin, L. V. Khabarin, and Yu. M. Chernov, Fiz. Tverd. Tela (St. Petersburg) 47(5), 837 (2005) [Phys. Solid State 47 (5), 863 (2005)].
5. A. N. Orlov, Fiz. Tverd. Tela (Leningrad) 29(12), 3676 (1987) [Sov. Phys. Solid State 29 (12), 2103 (1987)].