MAITHAM RABIE HADI; ZAINAB SHALLAL EAKAAR. The Estimation risk and its impact in building the optimal portfolio of stock market model framework: Analytical study in the Iraq Stock Exchange. Iraqi Journal for Administrative Sciences, كربلاء، جمهورية العراق, v. 12, n. 49, p. 122–65, 2024. DOI: 10.71207/ijas.v12i49.2662. Disponível em: https://mail.journals.uokerbala.edu.iq/index.php/ijas/article/view/2662. Acesso em: 19 apr. 2026.