TEJESH H R; JEELAN BASHA. An Empirical investigation of the Markowitz and Sharpe’s Single index model in building optimum Portfolio . South India Journal of Social Sciences, [S. l.], v. 21, n. 1, p. 1–8, 2023. Disponível em: https://journal.sijss.com/index.php/home/article/view/38. Acesso em: 1 jun. 2025.