STOENOIU, Carmen Elena. Pattern of Energy Productivity and Gross Domestic Product Among European Countries. Problemy Ekorozwoju, [S. l.], v. 13, n. 2, p. 113–123, 2018. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/5019. Acesso em: 22 jul. 2024.