BILSKA, I.; ULBRICH, R. RENEWABLE ENERGY SOURCES AS AN INSTRUMENT OF SUSTAINABLE DEVELOPMENT IN VIEW OF INTEGRATION WITH THE EUROPEAN UNION. Economic and Environmental Studies, [S. l.], v. 2, p. 187–197, 2020. Disponível em: https://czasopisma.uni.opole.pl/index.php/ees/article/view/3260. Acesso em: 4 jan. 2025.