Niedziółka, Paweł. “The Country Ceiling and Sovereign Rating Relationship Exemplified by the Case of Poland”. Acta Universitatis Lodziensis. Folia Oeconomica 3, no. 354 (July 8, 2021): 4–19. Accessed February 7, 2026. https://www.czasopisma.uni.lodz.pl/foe/article/view/8278.