De Matos, Carlos Antonio; Sitoe, C.; Neves, L.C.B.G.D. (Luís); Nothling, Johan Oliviette; Horak, Ivan Gerard(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2009-06)
Gallivan, Gordon J.; Spickett, Andrea; Heyne, Heloise; Spickett, Arthur M.; Horak, Ivan Gerard(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2011)
Horak, Ivan Gerard; Lutermann, Heike; Medger, Katarina; Apanaskevich, Dmitry A.; Matthee, Conrad A.(Agricultural Research Council, ARC-OVI and the University of Pretoria, 2012-02-02)