Masgoret, M.S.; Botha, C.J. (Christoffel Jacobus); Myburgh, Jan G.; Naude, T.W.; Prozesky, Leon; Naidoo, Vinny; Van Wyk, J.H. (Amie); Pool, E.J.; Swan, Gerry E.(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2009-06)
Botha, C.J. (Christoffel Jacobus); Crafford, Jan Ernst; Butler, V.P. Jr.; Stojanovic, M.N.; Labuschagne, Leonie(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2007-12)