Faria, Samuel, João Rebelo, and Sofia Gouveia. “Firms’ Export Performance: A Fractional Econometric Approach”. Journal of Business Economics and Management 21, no. 2 (March 26, 2020): 521-542. Accessed November 23, 2024. https://tede.vgtu.lt/index.php/JBEM/article/view/11934.