Missouri Ülikool (Kansas City), Center for Full Employment and Price, Distinguished Research Professor 01.01.1990-
Bard College (USA), Jerome Levy Economics Institute, visiting senior scholar 1997-2002
Bologna Ülikool, Facolta di Scienze Politiche, Professor of Economics (ordinario di Economia Politica) 01.01.1990–31.12.2002
Johns Hopkinsi Ülikool, School of Advanced International Studies, Bologna Center, Bologna, Italy, Adjunct Professor of International Economics 1990-1998
Johns Hopkinsi Ülikool, Bologna Center, Associate Director 01.01.1987–31.12.1989
Johns Hopkinsi Ülikool, Bologna Center, Research Institute, director 01.01.1986–31.12.1989
Johns Hopkinsi Ülikool, School of Advanced International Studies, Bologna Center, professor of International Economics 01.01.1985–31.12.1990
Libera Universita Internazionale degli Studi Sociali, Roma, Professore supplente di Politica Economica e Finanziaria 1988
Nice'i Ülikool, Faculté de Droit et des Sciences Economiques, Professeur invité 1988
Firenze Ülikool, Facolta di Scienze Politiche "Cesare Alfieri", Professore a contratto 1986-1988
International Centre for the Study of Political Economy (Trieste), Board of Directors, 01.01.1984–31.12.1985
Vakgroep Alg. Economie, Voorzitter (Chair) 01.01.1982–31.12.1985
Groningeni Ülikool (Holland), Professor of Monetary Theory (Gewoon Hoogleraar 01.01.1980–31.12.1985
Rutgers University (New Jersey), Livingston College, Professor of Economics 01.01.1977–31.12.1981
New School for Social Research, New York, Graduate Faculty, Adjunct Full Professor of Monetary Theory 1978-1980
Rutgers University (New Jersey), Livingston College, Department Chair 01.01.1977–31.12.1980
Southamptoni Ülikool, Lecturer and Senior Lecturer in Economics 01.01.1973–31.12.1979
Leuveni Katoliiklik Ülikool (Belgia), Institut des Pays en Voie de Développement, Professeur invité 1974
Bologna Ülikool, Professore incaricato di Sistemi Economici Comparati 1973
Leuveni Katoliiklik Ülikool (Belgia), Institut des Sciences Economiques, visiting fellow 1972-1973
Leuveni Katoliiklik Ülikool (Belgia), Institut des Sciences Economiques, Chargé de cours invité 1972
Bristoli Ülikool, lecturer in economics 01.01.1969–31.12.1972