Felis, Paweł. “The Impact of Local Governments on the Effectiveness of Selected Own Revenue Sources As Exemplified by Communes in Poland”. Journal of Finance and Financial Law 1, no. 4 (December 30, 2014): 37–51. Accessed February 8, 2026. https://www.czasopisma.uni.lodz.pl/fipf/article/view/9715.