Cluster Analysis of Per Capita Gross Domestic Products. Entrepreneurial Business and Economics Review, Poland, v. 7, n. 1, p. 217–231, 2018. DOI: 10.15678/EBER.2019.070113. Disponível em: https://eber.uek.krakow.pl/index.php/eber/article/view/19395. Acesso em: 29 oct. 2026.