STEFANIAK, Joanna. Barriers for service providers in the EU internal market. Współczesna Gospodarka, [S. l.], v. 9, n. 1 (28), p. 1–10, 2018. DOI: 10.26881/wg.2018.1.01. Disponível em: https://czasopisma.bg.ug.edu.pl/index.php/wg/article/view/651. Acesso em: 5 maj. 2024.