Vasant, J., L. Irgolic, R. Kruger, and K. Rajaratnam. “A Comparison Of Mean-Variance And Mean-Semivariance Optimisation On The JSE”. Journal of Applied Business Research (JABR), vol. 30, no. 6, Oct. 2014, pp. 1587-96, doi:10.19030/jabr.v30i6.8876.