In 1953 he became a professor at the University of Hamburg.

From 1937 until 1979, he taught at the University of Hamburg.

He was a visiting student in Hamburg University from 1969-1971.

From 1979 to 1984 he studied political economy at the University of Hamburg.

After the war he studied history at the University of Hamburg.

He has also occupied a position at the University of Hamburg.

In 2002 she was appointed professor at the University of Hamburg.

She spent her first semester at the University of Hamburg.

He then worked as a researcher at the University of Hamburg.

D. degrees as did the University of Hamburg in 1955.