Huni, Sally, and Athenia Bongani Sibindi. 2020. “An Application of The Markowitz’s Mean-Variance Framework in Constructing Optimal Portfolios Using the Johannesburg Securities Exchange Tradeable Indices: Array”. The Journal of Accounting and Management 10 (2). https://dj.univ-danubius.ro/index.php/JAM/article/view/376.