Mbuli, N, R Xezile, JHC Pretorius, and P Sowa. 2016. “Evaluation of the Impact of Distributed Synchronous Generation on the Stochastic Estimation of Financial Costs of Voltage Sags”. Journal of Energy in Southern Africa 27 (1):11-19. https://doi.org/10.17159/2413-3051/2016/v27i1a1561.