TURCZAK, Anna. Problems of Patent Protection in Poland. Equilibrium. Quarterly Journal of Economics and Economic Policy, Olsztyn, v. 4, n. 1, p. 203–216, 2010. DOI: 10.12775/EQUIL.2010.016. Disponível em: https://economic-policy.pl/index.php/eq/article/view/538. Acesso em: 10 feb. 2026.