Optimal planning of closed loop supply chains: A discrete versus a continuous-time formulation

#closed-loop supply chain #supply chain planning #reverse logistics #return flow #discrete-time formulation #continuous-time formulation #time slots #mixed-integer linear programming #resource sharing #pharmaceutical supply chain #Operability #Supply chain #Time horizon #Mathematical optimization #Discretization #Discrete time and continuous time #Computer science #linear programming #Dimension (graph theory)