Teaching international economics results in delivering lectures at a variety of universities and international conferences: Warsaw (1961), Geneva (Conference on science and technology in promoting the development of developing countriesR. Vandenbroeck – Rijksuniversiteit te Gent, Universitair Leven, n° 54, 1 May 1963, p. 5.), Pretoria (1964; Cultural Treaty between South-Africa, the Netherlands and BelgiumProf. dr. H.J.J.M. van der Merwe, Verslag aangaande die Republiek van Suid-Afrika over 1965, in Prof. Dr. C.A. Zaalberg, Jaarboek van de Maatschappij der Nederlandse Letterkunde 1966 (E.J. Brill, Leiden 1967), pp. 51–56.), Bratislava, Hull, Prague (1969 and 1989), Iasi (1971), Alvor,Charles P. Kindleberger and Andrew Shonfield (eds.), North American and Western European Economic Policies, Proceedings of a Conference held by the International Economic Association at Alvor (Portugal), International Economic Association Conference Volumes, Number 29 (Palgrave Macmillan UK, London 1971), passim. Vienna (U.N.I.D.O.United Nations Industrial Development Organization: R. Vandenbroeck – Rijksuniversiteit te Gent, Universitair Leven, n° 154, 30 November 1973, p. 19.), Berlin, Uppsala, New York, Cracow (1977), Sofia, Naples, Florence, Moscow (1992), Jena, Orel, Valencia, Haigerloch,European Monetary Union and Maastricht Treaty, American Economic Association (AEA) Conference on Exchange Rate Determination, 1995. Göteborg, Porto, Lisbon, Venice (2001), etc. Some lectures were later published as an essay in their own right, e.g.:
