1. E. Vook et al., Rev. Mod. Phys.,47, Suppl. No. 3 (1975).
2. G. Braganza, G. McCracken, and S. Erents, ?Methane formation during ion irradiations of silicon and boron carbides,? in: Proceedings of the International Symposium on Plasma Wall Interaction, Jülich, Oct. 18?22 (1976), p. 257.
3. I. V. Al'tovskii, S. N. Votinov, M. I. Guseva, et al., ?Physical problems of materials for the first wall of thermonuclear reactors,? in: Construction Materials for Thermonuclear Fusion Reactors [in Russian], Nauka, Moscow (1983), pp. 19?32.
4. T. Boothe and J. Ache, J. Nucl. Mater.,84, 85?92 (1979).
5. T. Maruyama and T. Yseki,ibid., 133?134, 727?731 (1985).