SEROKA, Aleksandra. Importance of renewable energy sources in the national energy system. Zeszyty Studenckie „Nasze Studia", [S. l.], n. 11, p. 73–80, 2021. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/naszestudia/article/view/6027. Acesso em: 18 may. 2024.