List of Articles Bi-objective optimization Open Access Article Abstract Page Full-Text 1 - A Non-dominated Sorting Ant Colony Optimization Algorithm Approach to the Bi-objective Multi-vehicle Allocation of Customers to Distribution Centers Jafar Bagherinejad Mina Dehghani 10.22094/joie.2016.230 20.1001.1.22519904.2016.9.19.6.8 Open Access Article Abstract Page Full-Text 2 - A Bi-objective Optimization for Vendor Managed Inventory Model Amir Hossein Niknamfar Seyed Hamid Reza Pasandideh 20.1001.1.22519904.2014.7.15.4.4 Open Access Article Abstract Page Full-Text 3 - A Comparison of NSGA II and MOSA for Solving Multi-depots Time-dependent Vehicle Routing Problem with Heterogeneous Fleet Behrouz Afshar-nadjafi Arian Razmi-farooji 20.1001.1.22519904.2014.7.16.6.8