by (Federal Republic of Germany)A.A.Chernov;by (United Kingdom)D.C.Bassett; by (Federal Republic of Germany)A.Helbok;by (United Kingdom)F.A.Yates; by (Federal Republic of Germany)G.Zumpe;by (United Kingdom)A.B.Tayler; by (Federal Republic of Germany)L.Beltzmann;by (United Kingdom)M.G.Bowler; by (Federal Republic of Germany)B.R.Nag;by (United Kingdom)B.K.Ridley; by (Federal Republic of Germany)E.Horowitz;by (United Kingdom)R.C.Helt; by (Federal Republic of Germany)H.Zassehaus;by (United Kingdom)A.Baker; by (Federal Republic of Germany)J.Haydn;by (United Kingdom)B.Bartok; by (Federal Republic of Germany)G.A.Watson;by (United Kingdom)J.J.H.Miller; by (Federal Republic of Germany)B.R.Frieden;by (United Kingdom)A.D.Gordon;