by Harrison, A., Walker, C.A., Parker, D., Jankowski, K.J., Cox, J.P.L., Craig, A.S., Sansom, J.M., Beeley, N.R.A., Boyce, R.A., Chaplin, L., Eaton, M.A.W., Farnsworth, A.P.H., Millar, K., Millican, A.T., Randall, A.M., Rhind, S.K., Secher, D.S., Turner, A.
Published in International journal of radiation applications and instrumentation. Part B, Nuclear medicine and biology (1991)