STEFANIAK-KOPOBORU, J.; KUCZEWSKA, J. Export specialization in services of the Visegrad countries. Equilibrium. Quarterly Journal of Economics and Economic Policy, [S. l.], v. 11, n. 2, p. 265–284, 2016. DOI: 10.12775/EQUIL.2016.012. Disponível em: http://economic-research.pl/Journals/index.php/eq/article/view/136. Acesso em: 29 jan. 2023.