1. 1School of Management, Yale University, New Haven, CT, USA
2. 2Economic School of Louvain, CIRTES, Université Catholique de Louvain, Louvain-la-neuve, Belgium
3. 3Department of Food Business and Development, Centre for Co-operative Studies, University College Cork, (UCC), Cork, Ireland
4. 4CES - HEC, University of Liege, Liege, Belgium