edited by P.G.Happer, D.L.Weaire edited by C.J.Cowper, A.J.DeRose edited by A.R.Butler, M.J.Perkins edited by W.W.Cooper, Yuji Ijiri edited by H.W.Hellyer, I.R.Sinclair edited by J.E.Fisher, H.B.Gatland edited by C.C.Gallagher, W.A.Knight edited by Luc Wagner, Jorg Weber. edited by K.Eckschlager, V.Stepanek edited by F.Koenigsberger, S.A.Tobias