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3. The use of the CT scanner in psychiatry;Roberts, J.K.A.; Lishman, W.A.;Br J Psychitry,1984
4. Possible impact of audit on chest x-ray requests from surgical wards;Roberts, C.J.; Fowkes, F.G.R.; Ennis, W.P.; Mitchell, M.;Lancet,1983
5. Implementation of guidelines for skull x-ray in patients with head injuries;Fowkes, F.G.R.; Evans, R.C.; Williams, L.A.; Gehibach, S.H.; Cooke, B.R.B.; Roberts, C.J.;Lancet,1984