1. INTES Institute of Family Businesses at WHU–Otto Beisheim School of Management.
2. Institute of Organization and Human Resource Management (IOP), University of Bern, Switzerland, Witten Institute for Family Business, Universität Witten/Herdecke, Germany.
3. Belk College of Business at the University of North Carolina at Charlotte, Center of Family Business at the WHU–Otto Beisheim School of Management (Germany).
4. Technische Universität München, Germany.