by (United States)A.P.Balachandran...et al;by (United Kingdom)J.P.Elliott; by (United States)C.C.Grahar...et al;by (United Kingdom)H.Helson; by (United States)A.D.Stewart...et al;by (United Kingdom)D.S.Falconer; by (United States)G.Birkhoff...et al;by (United Kingdom)J.K.Hale; by (United States)K.G.Das...et al;by (United Kingdom)N.S.Allen; by (United States)M.J.Pelczar...et al;by (United Kingdom)C.Edwards; by (United States)I.Gohberg...et al;by (United Kingdom)J.Heading; by (United States)K-J.Bathe...et al;by (United Kingdom)R.T.Fenner; by (United States)L.Ehrman...et al;by (United Kingdom)A.F.Dyer; by (United States)M.Sargent...et al;by (United Kingdom)O.Svelto;