ŁAPIŃSKA, Justyna. Determinant factors of intra-industry trade: the case of Poland and its European Union trading partners. Equilibrium. Quarterly Journal of Economics and Economic Policy, Olsztyn, v. 11, n. 2, p. 251–264, 2016. DOI: 10.12775/EQUIL.2016.011. Disponível em: https://economic-policy.pl/index.php/eq/article/view/135. Acesso em: 17 jan. 2026.