1. J. A. COOPER, Nucl. Instr. Methods, 106 (1973) 525.
2. J. V. GILFRICH, P. G. BURKHALTER, L. S. BIRKS, Anal. Chem., 45 (1973) 2002.
3. C. ENGELMANN, in J. M. A. LENIHAN, S. J. THOMSON, V. P. GUINN (Eds.), Advance in Activation Analysis, Vol. II, Academic Press, London 1972 Chap. 1.
4. J. HOSTE, J. OP DE BEECK, R. GIJBELS, F. ADAMS, P. VAN DEN WINKEL, D. DE SOETE, Instrumental and Radiochemical Activation Analysis, Butterworths, London, 1971, p. 87.
5. G. J. LUTZ, Anal. Chem., 41 (1969) 424.