Horak, Ivan Gerard; Nyangiwe, Nkululeko; De Matos, Carlos Antonio; Das Neves, Luis Carlos Bernardo G.(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2009-02)
Strydom, S.; Agenas, S.; Heath, M.F.; Phillips, C.J.C.; Rautenbach, G.H.; Thompson, P.N. (Peter N.)(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2008-09)