“The Significance of Selected Socio-Economic Factors for the Achieving of Fiscal Sustainability of Local Government Units (LGUs) in Poland”. Lex localis - Journal of Local Self-Government 17, no. 3 (July 25, 2019): 617–642. Accessed December 15, 2025. https://lex-localis.org/index.php/LexLocalis/article/view/1171.