1. Fed. Rad. Counc. Rep. No. 4 (U.S. Government Printing Office, 1963).
2. Fisher, Miss E. M. R., Keane, J. R., Toureau, A. E. R., and Cambray, R. S., Atomic Energy Res. Estab. Harwell, AERE–M10 10 (H.M.S.O., 1962).
3. Cambray, R. S., and Fisher, Miss E. M. R., Atomic Energy Res. Estab. Harwell, AERE–R4384 (H.M.S.O., 1963).
4. Cambray, R. S., Fisher, Miss E. M. R., Spicer, G. S., Wallace, C. G., and Webber, T. J., Atomic Energy Res. Estab. Harwell, AERE–R4094 (H.M.S.O., 1962).
5. Cambray, R. S., Fisher, Miss E. M. R., Spicer, G. S., Wallace, C. G., and Webber, T. J., Atomic Energy Res. Estab. Harwell, AERE–R4392 (H.M.S.O., 1963).