Kruger, Cornelius Johannes; Snyman, M.M.M. (Maria Magdalena Margaretha)(Department of Knowledge and Information Management, University of Johannesburg, 2007-09)
Lotriet, H.H. (Hugo H.); Matthee, Machdel C.; Mazanderani, Fadhila(Department of Knowledge and Information Management, University of Johannesburg, 2009-03)