HAJDYS, Dagmara. Problems of financing sources for environmental protection in strategic documents of the European Union and Poland in the new financial perspective for 2021–2027. Ekonomia i Prawo. Economics and Law. Online. 31 December 2021. Vol. 20, no. 4, pp. 745-761. [Accessed 1 September 2024]. DOI 10.12775/EiP.2021.044.