1. N. P. Agapova et al., Collected Proceedings of the CMEA Symposium on Fast Reactors (Obninsk, 1966), Vol. 2, Obninsk (1968), p. 457.
2. W. Armstrong et al., J. Nucl. Mat.,7, No. 2, (1967).
3. W. Armstrong and W. Irvine, ibid.J. Nucl. Mat.,9 No. 2 (1963).
4. Yu. I. Likhachev and V. V. Vakhromeeva, see [1], Collected Proceedings of the CMEA Symposium on Fast Reactors (Obninsk, 1966), Vol. 2, Obninsk (1968), p. 508.
5. M. Bleiberg et al., Proc. Venice Conf.,3 (1963), p. 319.