Jerome Warren is Visiting Research Fellow at Goethe-Universität Frankfurt and Postdoctoral Researcher at the Seminar for Cooperative Studies Universität zu Köln.

Lucio Biggiero is full professor at the Department of Industrial Engineering, Information and Economics, University of L'Aquila, Italy.

Jamin Hübner is research professor at LCC International University, Klaip¿da, Lithuania.

Kemi Ogunyemi is full professor at Lagos Business School, Pan¿Atlantic University, Lagos, Nigeria.