A NEW PRICING MODEL FOR CRUDE OIL PRE-SALE UNITS VIA SPF (STANDARD PARALLEL FORWARD) IN IRAN. Singaporean Journal of Business Economics and Management, [S. l.], v. 6, n. (6), p. 1–10, 2018. Disponível em: https://www.singaporeanjbem.com/index.php/SJBEM/article/view/426. Acesso em: 16 jul. 2026.