Van Heerden, J.H. (Jan Horn), 1957-; Blignaut, James Nelson; Bohlmann, Heinrich R.; Cartwright, Anton; Diederichs, Nicci; Mander, Myles(University of Pretoria, Department of Economics, 2016)
Schoeman, N.J. (Nicolaas Johannes); Robinson, Z. Clausen; De Wet, Theuns J.; Robinson, Zurika(Faculty of Economic and Management Sciences, University of Pretoria, 2000-06)