1. K.D. Asmus, G. Beck, A. Henglein, and A. Wigger, Ber. Bunsenqes. Phys. Chem., 70:869 (1966).
2. M. Schönenshöfer, G. Beck, and A. Henglein, Ber. Bunsenqes. Phys. Chem., 74:1011 (1970).
3. K. Schmidt and A. Buck, Science, 151:70 (1966).
4. J.W. Boag, G.E. Adams, and E.J. Jart, Physical Processes in Radiation Biology, ed. By L. Augenstein and B. Rosenberg, Academic Press, p.247 (1964).
5. T.I. Balkas, J.H. Fendler, and R.H. Schuler, J. Phys. Chem., 74:4497 (1970).