ميثم ربيع هادي. Simplify the input and portfolio-building measures, hazardous optimal Markowitz model the framework for a single index. Iraqi Journal for Administrative Sciences, كربلاء، جمهورية العراق, v. 8, n. 31, p. 87–121, 2025. DOI: 10.71207/ijas.v8i31.3140. Disponível em: https://mail.journals.uokerbala.edu.iq/index.php/ijas/article/view/3140. Acesso em: 18 apr. 2026.