Economic pricing of complex products in a competitive closed-loop supply chain network under uncertainty: A case study of CoPS industryOmid Solgi, Alireza Taromi, Jafar Gheidar-Kheljani and Ehsan DehghaniRAIRO-Oper. Res., 55 2 (2021) 921-945DOI: https://doi.org/10.1051/ro/2021001