GUPTA, Nishu. Performance Evaluation of Stock Using Markowitz and Sharpe Single Index Model. International Journal of Psychosocial Rehabilitation, [S. l.], v. 24, n. 7, p. 78–85, 2020. DOI: 10.61841/ht7z4136. Disponível em: https://psychosocial.com/index.php/ijpr/article/view/9524. Acesso em: 11 feb. 2026.