Teker, Dilek, Suat Teker, and Elçin Aykac Alp. “Causal Relations Among Macroeconomic Variables under Various Exchange Rate Levels: An Implementation of Threshold Vector Autoregression Model”. International Journal of Economics and Financial Issues 8, no. 4 (July 4, 2018): 177–184. Accessed May 21, 2022. https://econjournals.com/index.php/ijefi/article/view/6492.