UMIŃSKI, P. Potential Introduction of Flat Tax on Personal Income in the United States of America in 2007 and a Distribution of Revenue. Equilibrium. Equilibrium. Quarterly Journal of Economics and Economic Policy, [S. l.], v. 5, n. 2, p. 221–231, 2010. DOI: 10.12775/EQUIL.2010.037. Disponível em: https://apcz.umk.pl/EQUIL/article/view/EQUIL.2010.037. Acesso em: 23 jul. 2024.