Kruger, Cornelius Johannes; Snyman, M.M.M. (Maria Magdalena Margaretha)(Department of Knowledge and Information Management, University of Johannesburg, 2007-09)
Fombad, Madeleine C.; Boon, J.A. (Johannes Anton); Bothma, T.J.D. (Theodorus Jan Daniel)(Department of Knowledge and Information Management, University of Johannesburg, 2009-06)