محمد علي ابراهيم العامري; ميثم ربيع هادي. The impact of the change in pricing activity systems on the growing risk of crude oil prices. Iraqi Journal for Administrative Sciences, كربلاء، جمهورية العراق, v. 4, n. 17, p. 1–39, 2024. Disponível em: https://mail.journals.uokerbala.edu.iq/index.php/ijas/article/view/1893. Acesso em: 19 jan. 2025.