WIŚNIEWSKI, J. Empirical verification of the purchasing power parity. Oeconomia Copernicana, [S. l.], v. 3, n. 3, p. 37–61, 2012. DOI: 10.12775/OeC.2012.014. Disponível em: http://economic-research.pl/Journals/index.php/oc/article/view/461. Acesso em: 20 jan. 2022.