Legal advisor department European integration Federal Ministry Economics, Bonn, Germany, 1962-1997. Permanent representative of Germany to Court Justice of European Community, 1972-1989. Member German delegate, legal advisor Conference European Union on Economic and Monetary Union, 1989-1991.
Lecturer European law universities Münster, Saarbrücken, Bonn, Germany, Danube University, Austria, 2 Norwegian universities, 1982-2000. Member directorate Institute on European Integration, Berlin.
1962 - 1997