List of Articles Nirjhar Roy Article 1 - Development of a novel lot sizing model with variable lead time in supply chain environment 20.1001.1.22519904.2017.10.22.3.8 10.22094/joie.2017.275 Jitendra Kumar Nirjhar Roy Ali Mostafaeipour Mojtaba Qolipour Journal of Optimization in Industrial Engineering , Issue 22 , Year , Autumn 2017
