Diploma, University Essen, Germany, 1981. Doctor of economics, Ruhr University, Bochum, Germany, 1985.
Research assistant Ruhr University, Bochum, 1981-1985, researcher, 1988-1990. Post-doctoral fellow Deutsche Forschungsgemeinschaft, Germany, 1985-1988. Associate professor Maastricht (The Netherlands) School Management, 1990-1997.
Professor economics, international economics University Applied Sciences, Cologne, Germany, since 1997. Senior economist Institute Development and Peace, Duisburg, Germany, 1992-1994.
Member American Economics Association.