Number: 007-0582 Abstract Title: A Closed-loop Supply Chain Model for Managing Overall Optimization of Eco-efficiencyTitle: A Closed-loop Supply Chain Model for Managing Overall Optimization of Eco-efficiency Authors: Name: Wei D. Solvang, Ziqiong Deng, Bjoern Solvang Organization: Department of Industrial Engineering, Narvik University College, Norway Address: Lodve Langes gate 2, pb. 385, N-8...