ŻELAZNY, Rafał; PIETRUCHA, Jacek. Measuring innovation and institution: the creative economy index. Equilibrium. Quarterly Journal of Economics and Economic Policy, Olsztyn, v. 12, n. 1, p. 43–62, 2017. DOI: 10.24136/eq.v12i1.3. Disponível em: https://economic-policy.pl/index.php/eq/article/view/7. Acesso em: 15 jan. 2026.