Optimizing service level, price, and inventory decisions for a supply chain with retailers’ competition and cooperation under VMI strategyMarzieh Karimi, Hasan Khademi-Zare, Yahia Zare-Mehrjerdi and Mohammad Bagher FakhrzadRAIRO-Oper. Res., 56 2 (2022) 1051-1078DOI: https://doi.org/10.1051/ro/2022039