1. Reimers, P., Gilboy, W.B., and Goebbels, J.: Recent developments in the industrial application of computerized tomography with ionizing radiation, (NDT International 1984),17, p. 197–207
2. Hughes, J.S., and Roberts, G.C.: The radiation exposure of the UK population, (HMSO, London 1984),1984 review, NRPB-R173
3. Kouris, K., Spyrou, N.M., and Jackson, D.F.: ‘Imaging with ionizing radiations’, Progress in Medical and Environmental Physics, (Surrey University Press, Blackie, Glasgow, London 1982),1,
4. Jackson, D.F., and Kouris, K.: ‘The role and potentiol of new Imaging methods’, imaging with nonionizing radiations, (Progress in Medical and Environmental Physics, Surrey University Press, Blackie, Glasgow, London 1983),2, p. 1