SZÉP, T.; PÁLVÖLGYI, T.; KÁRMÁN-TAMUS, Éva. Indicator-based assessment of sustainable energy performance in the European Union. International Journal of Sustainable Energy Planning and Management, Aalborg, Denmark, v. 34, p. 107–124, 2022. DOI: 10.54337/ijsepm.7055. Disponível em: https://journals.aau.dk/index.php/sepm/article/view/7055. Acesso em: 14 aug. 2022.