NAZARCZUK, J. M. Do operations in SEZs improve a firm’s productivity? Evidence from Poland. New Trends and Issues Proceedings on Humanities and Social Sciences, [S. l.], v. 4, n. 10, p. 256–264, 2017. DOI: 10.18844/prosoc.v4i10.3096. Disponível em: https://un-pub.eu/ojs/index.php/pntsbs/article/view/3096. Acesso em: 27 apr. 2024.