1. Cross, W.G.: International Conference on Neutron Physics and Nuclear Data for Reactors and other Applied Purposes, Harwell, Sept. 1978. Kousnetzoff, C. (ed.). Paris: OECD Nuclear Energy Agency 1978
2. Gray, L.H., Conger, A.D., Ebert, M., Hornsey, S., Scott, O.C.A.: Br. J. Radiol.26, 638 (1953)
3. Hornsey, S., Field, S.B.: p. 762 of Proceedings of the Sixth Int. Congress of Radiation Research, Tokyo, May 1979
4. Ullmaier, H., Behrisch, R., Barschall, H.H.: Nucl. Instrum. Methods145, 1 (1977)
5. Tsukada, K.: Neutron Sources for Medical Use, IAEA Consultants' Meeting on Neutron Source Properties, Debrecen, March 1980, Report INDC(JAP)-49/L+Special (1980)