Polakow, Daniel, David Taylor, and Obeid Mahomed. “Aggregational Gaussianity In The South African Equity Market”. International Business & Economics Research Journal (IBER) 13, no. 5 (August 23, 2014): 1091-1106. Accessed August 18, 2020. https://clutejournals.com/index.php/IBER/article/view/8775.