Enhancement of the voltage stability and steady state performance of the cape corridor using phase shifting transformers. - Reentseng Molapo; Nhlanhla Mbuli; Nelson M. Ijumba (AFRICON, 2011)

An empirical model of fire-induced airgap voltage breakdown characteristics under HVDC conditions. - Zola Ntshangase; Andrew Swanson; Nelson M. Ijumba; Anthony C. Britten (AFRICON, 2017)