KUMOR, Paweł; SZTAUDYNGER, Jan Jacek. The Optimal Inequality of Earnings – the Econometric Analysis. Comparative Economic Research. Central and Eastern Europe, Poland, v. 10, n. 1-2, p. 117–132, 2007. DOI: 10.18778/1508-2008.10.06. Disponível em: https://www.czasopisma.uni.lodz.pl/CER/article/view/29826. Acesso em: 10 aug. 2026.