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2021–present
Professor in Economics, University of Pretoria
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2012–2021
Dean and Professor: Faculty of Economics and Management Sciences , University of Pretoria
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2009–2012
Professor and Dean, North-West University, Potchefstroom Campus
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2007–2009
Professor and Head of School, Monash South Africa
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2005–2007
Professor of Economics, University of the Free State
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1989–2004
Professor, senior lecturer, lecturer and junior lecturer of Economics, Rand Afrikaans University