Konat , Gökhan, and Muhammet Fatih Muhammet Fatih Coşkun. “Testing Unemployment Hysteresis With Multi-Factor Panel Unit Root: Evidence from OECD Countries”. Economy of Regions 18, no. 3 (September 30, 2022): 742–754. Accessed May 22, 2026. https://www.economyofregions.org/ojs/index.php/er/article/view/311.