1. Environmental Surveillance around Nuclear Installations (Proceedings Series), IAEA, Vienna, 1974, Vol. 1 and 2.
2. M. FAURE, Kerntechnik, 16 (1974) 490.
3. P. MEYER, Kerntechnik, 19 (1977) 9.
4. G. MIELKEN, M. WILL, Kerntechnik, 18 (1976) 61.
5. L. M. VORONIN, A. P. VOLYAKOV, V. F. KOZLOV, At. Energ. USSR, 41 (1976) 235.