List of Articles Bijan Nahavandi Article 1 - Analyzing the Drivers of Bullwhip Effect in Pharmaceutical Industry’s Supply Chain 20.1001.1.23222301.2023.9.1.7.6 10.30495/jsm.2022.1966147.1691 Parvaneh Tavakkol Bijan Nahavandi Mahdi Homayounfar Journal of System Management , Issue 1 , Year , Winter 2023 Article 2 - A dynamics approach for modeling inventory fluctuations of the pharmaceutical supply chain in covid 19 pandemic 10.22094/joie.2023.1966193.1981 Parvaneh Tavakol Bijan Nahavandi Mahdi Homayounfar Journal of Optimization in Industrial Engineering , Issue 34 , Year , Spring 2023