1. M. W. Lerner and J. Rynasiewicz, ?The Analysis of Essential Nuclear Reactor Materials?, Ed. C. J. Rodden (U.S. Government Printing Office, Washington, DC, 1964) p. 577.
2. A. Nemodruk and Z. K. Karalova, ?Analytical Chemistry of Boron? (Israel Program for Scientific Translations, Jerusalem, 1965).
3. J. Weitman, N. Daverhog, and S. Farvolden, Nucl. Appl. Tech. 9 (1970) 408.
4. J. D. H. Hughes and G. T. Rogers, J. Inst. Metals 95 (1967) 299.
5. B. A. Loveridge and C. A. J. McInnes, ?The Microscope?, 16 (1968) 105.