Abanavaz, Fezzeh, and Morteza Khakzar Bafruei. “Studying a Two-Level Supply Chain Including a Manufacturer and Several Retailers With a Wholesale Price Contract Between Them”. International Review of Management and Marketing 10, no. 5 (October 10, 2020): 165–171. Accessed December 22, 2024. https://econjournals.com.tr/index.php/irmm/article/view/8402.