1. Gray, L. H., Brit. J. Radiol., 26, 638 (1953).
2. Bridges, B. A., in Advances in Radiation Biology (edit. by Augenstein, L. G., Mason, Ronald, and Zelle, Max.), 3, 123 (Academic Press, London and New York, 1969).
3. Adams, G. E., in Radiation Protection and Sensitization (edit. by Moroson, H. L., and Quintiliani, M.), 3 (Taylor and Francis, London, 1970).
4. Chapman, J. D., Webb, R. G., and Borsa, J., Intern. J. Radiat. Biol., 19, 561 (1971).
5. Adams, G. E., Asquith, J. C., Dewey, D. L., Foster, J. L., Michael, B. D., and Willson, R. L., Intern. J. Radiat. Biol., 19, 575 (1971).