UDO, Victor; PAWŁOWSKI, Artur. Human Progress Towards Equitable Sustainable Development – part II: Empirical Exploration. Problemy Ekorozwoju , [S. l.], v. 6, n. 2, p. 33–62, 2011. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4781. Acesso em: 30 jan. 2026.