Egyed, Ildikó, and Zsuzsanna Zsibók. “Exploring Firm Performance in Central and Eastern European Regions: A Foundational Approach”. Hungarian Geographical Bulletin 72, no. 3 (September 30, 2023): 257-285. Accessed December 8, 2024. https://ojs3.mtak.hu/index.php/hungeobull/article/view/11603.