1. A. Catsch undD. Kh. Lê, Strahlenther.104, 609 (1957).
2. J. F. Fried, E. H. Graul, J. Schubert undW. M. Westfall, Atompraxis5, 1 (1959).
3. V. H. Smith, Nature181, 1792 (1958).
4. A. Catsch undH. Melchinger, Strahlenther.107, 437 (1958).
5. H. Foreman, inMetal-Binding in Medicine (Philadelphia und Montreal 1960), p. 160.