by (United Kingdom)L.D.Landau;by (United Kingdom)E.M.Lifshitz;by (USSR)I.E.Tamm; by (United Kingdom)L.D.Landau;by (United Kingdom)E.M.Lifshitz;by (United States)R.L.Liboff; by (United Kingdom)P.R.Lancaster;by (United Kingdom)D.Michell;by (USSR)E.P.Popov; by (United Kingdom)B.K.Harris;by (United Kingdom)G.R.Noakes;by (USSR)I.E.Irodov; by (United Kingdom)E.Leader;by (United Kingdom)E.Predazzi;by (USSR)E.M.Lifshitz; by (United Kingdom)P.G.Harper;by (United Kingdom)B.S.Wherrett;by (USSR)B.J.Zwolinski; by (United Kingdom)L.P.Ullmann;by (United Kingdom)L.Krasner;by (USSR)Prof.A.Petrovsky; by (United Kingdom)B.H.Lavenda;by (United Kingdom)M.L.McGlashan; by (United Kingdom)й.Берг;by (United Kingdom)й.Лёфстрём;by (USSR)Б.Н.Пшеничн? by (United Kingdom)Lesley Blundell;by (United Kingdom)Jackie Stokes;by (USSR)R.Baker;