1. These conditions have been accepted as the aim of participants in a WHO/IAEA joint research programme. See Report IAEA-157 (1973) 175.
2. J. M. J. VERSIECK, A. B. H. SPEECKE, Proc. Symp. on Nucl. Activation Techniques in the Life Sciences, Bled, 1972, IAEA, Vienna, 1972, p. 39.
3. B. MAZIERE, A. GAUDRY, J. GROS, D. COMAR, Radiochem. Radioanal. Letters, 28 (1977) 155.
4. Handbook on Nuclear Activation Cross Sections, Technical Reports Series No. 156, IAEA, Vienna 1974.
5. Report of 2nd Meeting of Investigators on Trace Elements in Relation to Cardiovascular Diseases, WHO, Geneva, Report CVD/73.4, 1973.