Current positions:
* Professor of entrepreneurship and economics, Montpellier Business School, France
* Emeritus professor of economics and entrepreneurship, Erasmus School of Economics, Erasmus University Rotterdam
* Emeritus professor of entrepreneurship and small firms, School of Business and Economics, Free University Amsterdam

research fellow, Erasmus Research Institute for Management
Tinbergen Institute

director, CASBEC (Centre for Advanced Small Business Economics)
academic director, ECE (Erasmus Centre for Entrepreneurship)
director, EURIBEB (Erasmus University Rotterdam Institute for Behavior and Biology
research fellow, IDS (Institute for Development Strategies) School for Public and Environmental Affairs, Indiana University
research fellow, IZA (Institute for the Study of Labor) Bonn Germany
chair, DARE (Dutch Academy of Research in Entrepreneurship)

* Further scientific and societal roles and memberships
Two entrepreneurship websites:
Citations in:

For friends only:
"Visions of the past: wish you had been there", early version, 2016
"Entrepreneurship, knowledge and more", valedictory speech, 2021
"Liber Amicorum", 2021