GORYNIA, Marian. The Competitiveness of Polish Firms and the European Union Enlargement. Economics and Business Review, Poland, v. 1, n. 1, p. 48–68, 2001. DOI: 10.18559/ebr.2001.1.480. Disponível em: https://journals.ue.poznan.pl/ebr/article/view/480. Acesso em: 11 apr. 2025.