ZYGMUNT, Aleksandra. Innovation activities of Polish firms. Multivariate analysis of the moderate innovator countries. Oeconomia Copernicana, [S. l.], v. 8, n. 4, p. 505–521, 2017. DOI: 10.24136/oc.v8i4.31. Disponível em: https://oeconomia.pl/index.php/oc/article/view/612. Acesso em: 8 feb. 2026.