List of Articles Quantity discount Open Access Article Abstract Page Full-Text 1 - Mechanism Design for Coordination of Two-Echelon Supply Chain under Stochastic Demand Morteza Taherifard Ibrahim Taimurie Marzie Ebrahimi Soghra Solimangoli Open Access Article Abstract Page Full-Text 2 - A multi-objective model for closed-loop supply chain optimization and efficient supplier selection in a competitive environment considering quantity discount policy Mustafa Jahangoshai Rezaee Samuel Yousefi Jamileh Hayati Open Access Article Abstract Page Full-Text 3 - Economic order quantity model for growing items with incremental quantity discounts Makoena Sebatjane Olufemi Adetunji Open Access Article Abstract Page Full-Text 4 - An optimization technique for vendor selection with quantity discounts using Genetic Algorithm N Arunkumar L Karunamoorthy N Uma Makeshwaraa