fa Supplier Selection in Three Echelon Supply Chain & Vendor Managed Inventory Model Under Price Dependent Demand Condition Research Paper مقاله پژوهشی This paper, considers the supplier selection in three echelon supply chain with Vendor Managed Inventory (VMI) strategy under price dependent demand condition. As there is a lack of study on the supplier selection in VMI literature, this paper presents a VMI model in supply chain including multi supplier, one distributer and multi retailer that distributer selects suppliers. Two class models (traditional vs. VMI) are presented and we compare them to study the impact of VMI on supply chain and supplier selection. As the proposed model is a NP-hard problem, a meta-heuristics namely Harmony Search is employed to optimize the proposed models. We show that how the VMI system can effect on supplier selection and can change the set of selected suppliers. Finally the conclusion and further studies are presented This paper, considers the supplier selection in three echelon supply chain with Vendor Managed Inventory (VMI) strategy under price dependent demand condition. As there is a lack of study on the supplier selection in VMI literature, this paper presents a VMI model in supply chain including multi supplier, one distributer and multi retailer that distributer selects suppliers. Two class models (traditional vs. VMI) are presented and we compare them to study the impact of VMI on supply chain and supplier selection. As the proposed model is a NP-hard problem, a meta-heuristics namely Harmony Search is employed to optimize the proposed models. We show that how the VMI system can effect on supplier selection and can change the set of selected suppliers. Finally the conclusion and further studies are presented Supplier Selection , Vendor managed inventory , Price Dependent Demand , Harmony search , Supplier Selection , Vendor managed inventory , Price Dependent Demand , Harmony search , 1079 1101 http://system.khu.ac.ir/ijsom/browse.php?a_code=A-10-586-1&slc_lang=fa&sid=1 Mohammad Sohrabi Mohammad Sohrabi ms.sohrabibb@gmail.com 1003194753284600221 1003194753284600221 Yes Department of industrial engineering, PNU University, Tehran, Iran Department of industrial engineering, PNU University, Tehran, Iran Parviz Fattahi Parviz Fattahi pfattahi@gmail.com 1003194753284600222 1003194753284600222 No Department of Industrial Engineering Bu Ali Sina University, Hamadan, Iran Department of Industrial Engineering Bu Ali Sina University, Hamadan, Iran Amir Kheirkhah Amir Kheirkhah amirsamankheirkhah@yahoo.com 1003194753284600223 1003194753284600223 No Department of Industrial Engineering Bu Ali Sina University, Hamadan, Iran Department of Industrial Engineering Bu Ali Sina University, Hamadan, Iran Gholamreza Esmaeilian Gholamreza Esmaeilian greiep@yahoo.com 1003194753284600224 1003194753284600224 No Department of Industrial Engineering PNU University, Isfahan, Iran Department of Industrial Engineering PNU University, Isfahan, Iran