Sgammini, Ruschelle. “A Comparative Risk-Adjusted Performance Evaluation of South African SRI Funds and the FTSE JSE over the Covid-19 Period”. International Journal of Economics and Financial Issues 13, no. 1 (January 14, 2023): 46–55. Accessed December 22, 2024. https://mail.econjournals.com/index.php/ijefi/article/view/13717.