1. ASTM, E321-69, 1969, p. 1045.
2. J. E. REIN, Proc. IAEA Symp. on Analytical Methods in the Nuclear Fuel Cycle, SM-149/40, Vienna, 1971.
3. L. KOCH, A. CRICCHIO, F. GERIN, ibidem Proc. IAEA Symp. on Analytical Methods in the Nuclear Fuel Cycle, IAEA/SM-149/2
4. R. M. ABERNATHEY, G. M. MATLACK, J. E. REIN, ibidem Proc. IAEA Symp. on Analytical Methods in the Nuclear Fuel Cycle, IAEA/SM-149/37
5. G. FREJAVILLE, M. LUCAS, ibidem Proc. IAEA Symp. on Analytical Methods in the Nuclear Fuel Cycle, IAEA/SM-149/52