Kleynhans, Waldo; Salmon, Brian Paxton; Olivier, Jan Corne; Van den Bergh, Frans; Wessels, K.J. (Konrad); Grobler, Trienko Lups; Steenkamp, Karen C.(Institute of Electrical and Electronics Engineers, 2012)
Malekian, Reza; Bogatinoska, Dijana Capeska; Karadimce, Aleksandar; Ye, Ning; Trengoska, Jasna; Nyako, William Asiama(Kaunas University of Technology, 2015)