Yamaka, Woraphon, and Paravee Maneejuk. “Is It Inverted U? Testing Relationships Between Debt and Growth: New Evidence from Smooth Transition Kink Regression”. Technological and Economic Development of Economy 31, no. 4 (July 7, 2025): 1008–1028. Accessed September 6, 2025. https://jbem.vilniustech.lt/index.php/TEDE/article/view/22611.