by (United Kingdom)B.R.Nanda;by (USSR)G.E.Pavlova; by (United Kingdom)I.R.Sinclair;by (USSR)I.V.Savelyev; by (United Kingdom)K.Rektorys;by (USSR)M.L.Krasnov; by (United Kingdom)D.L.Johnson;by (USSR)M.I.Kargaplov; by (United Kingdom)J.V.Grabiner;by (USSR)N.B.Vasllyev; by (United Kingdom)J.E.Baird;by (USSR)G.B.Antrushina; by (United Kingdom)C.Swatridge;by (USSR)F.B.Kedrov; by (United Kingdom)J.J.O'Keefe;by (USSR)N.B.Zucova; by (United Kingdom)J.L.Bell;by (USSR)W.Marek; by (United Kingdom)J.L.Matin;by (USSR)E.Prugovecki;