List of Articles Lot size Open Access Article Abstract Page Full-Text 1 - Development of a novel lot sizing model with variable lead time in supply chain environment Jitendra Kumar Nirjhar Roy Ali Mostafaeipour Mojtaba Qolipour 10.22094/joie.2017.275 Open Access Article Abstract Page Full-Text 2 - A Mathematical Model for Determining the Optimal Production Lot Size of Multiple Products on a Machine Ayub Rahimzadeh