Dritsaki, Melina, and Chaido Dritsaki. “GDP Per Capita for West-Balkan Countries: Evidence from Linear and Nonlinear Unit Root Tests”. Scientific Annals of Economics and Business 73, no. 2 (April 27, 2026): 363–392. Accessed June 27, 2026. https://saeb.feaa.uaic.ro/index.php/saeb/article/view/3638.