From 27 August 1957 , he became an initial member of the Forschungsrat of the GDR .
From 8 December 1955 to 1959 , he became president of the German Academy of Sciences , after which he was vice-president until 1961 .
From 27 August 1957 , vice-president became an initial member of the Forschungsrat of the GDR .
From 8 December 1955 to 1959 , he became president of the German Academy of Sciences , after which he was vice-president until 1961 .