PEÑA, G. The key role of quoted spreads in financial services and transactions. Economics and Business Letters, [S. l.], v. 10, n. 3, p. 208–216, 2021. DOI: 10.17811/ebl.10.3.2021.208-216. Disponível em: http://156.35.33.188/index.php/EBL/article/view/16014. Acesso em: 17 sep. 2026.