This paper presents a collaborative measurement tool in the customer-supplier relationships: the PEAK © Collaborative Index (PCI). Based on the theoretical foundations of relational norms and philosophical approaches of the cardinal virtues of justice, courage, prudence and temperance, the PCI has been tested for 3 years with hundreds of firms engaged in collaborative relationships. Link to the article
DONADA, C., LENGLET, F., MOTHE, C. and NILLÈS, J.J. (2015). Un indice de mesure du collaboratif client-fournisseur. Revue Française de Gestion, 41(251), pp. 69-85.