1. V. F. Zelenskii, I. M. Neklyudov, and T. I. Chernyaeva, Radiation Defects and Swelling of Metals (Nauk. Dumka, Kiev, 1988), Chap. 2, p. 21 [in Russian].
2. Ya. I. Frenkel, Introduction to the Theory of Metals (Gostekhizdat, Moscow, 1958), Chap. 12, p. 194 [in Russian].
3. A. D. Brailsford and R. Bollough, J. Nucl. Mater. 56, 121 (1975).
4. Yu. V. Konobeev, A. V. Subbotin, and S. I. Golubov, Rad. Eff. 20, 265 (1973).
5. M. W. Thompson, Defects and Radiation Damage in Metals (Cambridge Univ. Press, Cambridge, 1969).