Bi-Objective Reliable Facility Location Problem Closed-loop supply chain network design Competitive location Contract design Facility disruptions Fuzzy logic Genetic Algorithm Heuristic algorithm Location-allocation problem Lost sales Maximal covering location problem Multi-Objective Biogeography-Based Optimization (MOBBO) Multi-echelon NSGA-II Non-Dominated Ranking Genetic Algorithm (NRGA) Quota allocation Response Surface Methodology (RSM) SCOR Social responsibility Stochastic Process Supplier selection Supply chain management Sustainable supply chain network design Tabu search Vendor Managed Inventory