Essam Al ARBED. Return and Risk Model for Optimal Portfolio: Applied Case Study Cairo Stock Exchange. Business, Management and Economics - Research Progress Vol. 1, [S. l.], p. 94–125, 2024. DOI: 10.9734/bpi/bmerp/v1/1121. Disponível em: https://stm.bookpi.org/BMERP-V1/article/view/15176. Acesso em: 5 jun. 2026.