GAWOR, Leszek. Scientific Communique: Ten Years of Problemy Ekorozwoju/ Problems of Sustainable Development. Problemy Ekorozwoju, [S. l.], v. 11, n. 2, p. 131–133, 2016. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4953. Acesso em: 22 jul. 2024.