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)
Cloete, M.; Dungu, B.; Van Staden, L.I.; Ismail-Cassim, N.; Vosloo, Wilna(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2008-03)