hamburg,1983 hamburg,1984 hamburg,1985 (3) hamburg,1986 hamburg,1988 (2) hamburg,1989 (5) hamburg,1991 (3) hamburg,1992 (4) hamburg,1993 hamburg,1996 (2) hamburg,1997 (5) hamburg,1998 hamburg,1999 (2) hannover,1975 hannover,1980 hannover,1982 (3) hannover,1997 harvard,1975