edited by M.E. Sime and M.J. Coombs. edited by A.R. Butler & M.J. Perkins. edited by A.R. Butler and M.J. Perkins. edited by M.E. Fayed, L. Otten. edited by R.N. Sinha & W.E. Muir. edited by M.L. Simoons, J.H.C. Reiber. edited by C.J. Colbourn and M.J. Colbourn. edited by C.A. Brebbia and J.J. Connor. edited by J.A. Bennett and M.E. Botkin. edited by M. Szycher and W.J. Robinson.