1. E. SABBIONI, L. CLERICI, F. GIRARDI, F. CAMPAGNARI, J. Radioanal. Chem., 14 (1973) 159.
2. BCR Reference Materials, Addendum to catalogue 1983, Community Bureau of Reference, Brussels, 1985.
3. K. HEYDORN, Neutron Activation Analysis for Clinical Trace Element Research, Vol. 1, CRC Press, Boca Raton, 1984.
4. F. W. WALKER, D. G. MILLER, F. FEINER, Chart of the Nuclides, 13th ed., General Electric, San Jose, 1983.
5. S. R. THONTADARYA, Int. J. Appl. Radiation Isotopes, 36 (1985) 251.