KOŚMICKI, Eugeniusz; PIEŃKOWSKI, Dariusz. In Search of the Present Economy and Society Modernisation Concept (An Attempt to Explain the Main Problems). Problemy Ekorozwoju / Problems of Sustainable Development, [S. l.], v. 8, n. 1, p. 115–123, 2013. Disponível em: https://ph.pollub.pl/index.php/preko/article/view/4866. Acesso em: 15 dec. 2025.