1. 1. Gregoli, S., Olast, M. & Bertinchamps, A. /. Radial. Res. 89, 238-249 (1982). 2. Huttermann, J. et al. Discuss. Faraday Soc. 67, 135-145 (1984). 3. Boon, P. J., Cullis, P. M., Symons, M. C. R. & Wren, B. W. J. Chem. Soc. Perkin Trans. 2, 1393-1398 (1984). 4. Cullis, P. M. & Symons, M. C. R. Radiat. Phys. Chem. 27, 93-101 (1986). 5. Boon, P. J., Cullis, P. M., Symons, M. C. R. & Wren, B. W. /. Chem. Soc. Perkin Trans. 2, 1057-1062 (1985). 6. Kuwabara, M. & Yoshii, G. Biochim. biophys. Ada 432, 292-299 (1976). 7. Stanger, H. K., Fielder, E. & Grillmaier, R. E. Proc. Eighth Symp. Jiilich, F.R.G. 517-524; 671-683 (Commission of the European Communities, Radiation Protection, Micro-dosimetry, 1982). 8. Liickle-Huhle, C., Braun, A. & Hagen, U. Z. Naturf. 25b, 1264-1266 (1970). 9. Jones, G. D. D., Lea, J. S., Symons, M. C. R. & Taiwo, F. A. Nature 330, 772-773 (1987).