Abdi Seyyedkolaee, Mohammad, Shahryar Zaroki, and Yousef Roshan. “The Role of Islamic Contracts Credits in Private Investment in Iran: An Application of Threshold Regression Approach”. Jordan Journal of Economic Sciences 8, no. 2 (June 30, 2021). Accessed February 26, 2026. https://archives.ju.edu.jo/index.php/jjes/article/view/107221.