Smith, Marie F.; Leighton, Christine S. (Christina Stephanie); Morey, Liesl; Schonfeldt, H.C. (Hettie Carina)(South African Society of Crop Production/ Soil Science Society of South Africa/ South African Weed Science Society/ South African Society for Horticultural Sciences, 2009-01)
Malleson, Evelyn Rhoda; Meeske, R.; Erasmus, Lourens Jacobus; Van Niekerk, Willem A.; Coertze, Roelof Johannes(Tropical Grassland Society of Australia, 2009)