ONU-United Nations, Department of International Economic and Social Affairs
1981-1983

ONU-Nations Unies, Commission Économique pour l'Europe
1982-1985

OECD-Organisation for Economic Co-Operation and Development, IEA-International Energy Agency
2010-

OECD-Organisation for Economic Co-Operation and Development, IEA-International Energy Agency
2010-

OECD-Organisation for Economic Co-Operation and Development
2011-2014

ONU-United Nations, Department of Economic and Social Affairs, Statistical Office
1974-1983

OECD-Organisation for Economic Co-Operation and Development, Steel Committee
1985-1991

OECD-Organisation for Economic Co-Operation and Development, IEA-International Energy Agency
2016-2019

OECD-Organisation for Economic Co-Operation and Development, IEA-International Energy Agency
2010-2015

ONU-United Nations, Department of Economic and Social Affairs, Statistical Office
1985-1993

ONU-United Nations, Economic Commission for Europe
1970-1993

UNIDO-United Nations Industrial Development Organization
1995-