Internationale Wissenschaftliche Kolloquium : Die Bedeutung des Potsdamer Abkommens für den Kampf um die Europäische Sicherheit, (1970 : Potsdam, Germany)
United Nations Economic Commission for Europe, Statistics Sweden, Statistical Office of the European Communities, United Nations International Research and Training Institute for the Advancement of Women
Conferenza sulla conservazione delle zone umide di importanza internazionale specialmente come habitat degli uccelli acquatici (1980 : Cagliari, Italy)