by (Hungary)Juhasz Jozsef...et al;by (United Kingdom)E.Gussmann; by (United States)K.G.Das...et al;by (United Kingdom)N.S.Allen; by (United States)I.Gohberg...et al;by (United Kingdom)J.Heading; by (United States)R.A.Adey...et al;by (United Kingdom)I.Sinclair; by (United Kingdom)Doff.A...et al;by (United Kingdom)L.G.Alexander; by (United States)R.Oliver...et al;by (United Kingdom)E.N.Williams; by (United States)W.Adam...et al;by (United Kingdom)D.Barton; by (United States)M.C.Sneed...et al;by (United Kingdom)K.A.Jensen; by (United States)S.B.Jones...et al;by (United Kingdom)W.M.Darley; by (United Kingdom)Norman Page...et al;by (United Kingdom)J.Boswell;