Competitive versus cooperative performances of a Stackelberg game between two suppliersIbtissem Ernez-Gahbiche, Khaled Hadjyoussef, Abdelwaheb Dogui and Zied JemaiRAIRO-Oper. Res., 50 4-5 (2016) 767-780DOI: https://doi.org/10.1051/ro/2016050