Sticca, Ralph Melles, and Sílvio Hiroshi Nakao. 2013. “Factors to Promote Disagreement Between Tax Authorities and Taxpayers in Regard to Hedge Validation”. Revista Contemporânea De Contabilidade 10 (21):25-50. https://doi.org/10.5007/2175-8069.2013v10n21p25.