OLIYNYCHUK, Oleksandra. Current state of ecological taxation in Ukraine and its improvement according to the EU experience. Prawne Problemy Górnictwa i Ochrony Środowiska, [S. l.], n. 1-2, p. 111–126, 2020. DOI: 10.31261/PPGOS.2020.01-02.08. Disponível em: https://journals.us.edu.pl/index.php/ppgos/article/view/11015. Acesso em: 17 kwi. 2025.