1. Mahnke, Z. Phys.,90 (1934).
2. S. N. Zhurkov, Vestn. Akad. Nauk SSSR,11, (1957);
3. Izv. Akad. Nauk SSSR, Neorg. Mat., No. 3 (1967).
4. V. R. Regel', A. I. Slutsker, and É. E. Tomashevskii, The Kinetic Nature of the Strength of Solids [in Russian], Nauka, Moscow (1974).
5. V. I. Betekhtin and S. N. Zhurkov, Probl. Prochn., No. 2 (1971).