Kuryłek, Wojciech, and Yochanan Shachmurove. “The Effects of COV-19 on 150,000 Polish Enterprises”. Economics and Business Review 11, no. 1 (March 31, 2025): 82–107. Accessed April 3, 2025. https://journals.ue.poznan.pl/ebr/article/view/1899.