Determination the optimal portfolio by using the cut- off rate. المجلة العراقية للعلوم الاقتصادية, [S. l.], v. 11, n. 37, 2018. Disponível em: https://ecournal.uomustansiriyah.edu.iq/index.php/ecournal/article/view/152.. Acesso em: 4 2026.