Prof. JOHN DALE, Edinburg, UK
Secretary General 1978-1984

 Prof. PETER BOGER, Kostanz,
Secretary General 1984-1988

Prof. HANS LAMBERS, Australia
1992-1998

 Prof. MIKE JACKSON, UK
1998-2004

 Prof. KALLIOPI A.
ROUBELAKIS-ANGELAKIS, Greece
2004-