Venter, Petrus Johannes; Du Plessis, Monuko; Bogalecki, Alfons Willi; Goosen, Marius Eugene; Rademeyer, Pieter(Society of Photo-optical Instrumentation Engineers, 2012)
Ellinghaus, P.; Venter, Petrus Johannes; Du Plessis, Monuko; Rademeyer, Pieter; Bogalecki, Alfons Willi(South African Institute of Electrical Engineers, 2010-03)