Authors: Viljoen, AM Van Wyk, BE Newton, LE

Citation: Am. Viljoen et al., The occurrence and taxonomic distribution of the anthrones aloin, aloinoside and microdontin in Aloe, BIOCH SYST, 29(1), 2001, pp. 53-67

Authors: Dagne, E Bisrat, D Viljoen, A Van Wyk, BE

Citation: E. Dagne et al., Chemistry of Aloe species, CURR ORG CH, 4(10), 2000, pp. 1055-1078

Authors: Viljoen, AM Van Wyk, BE

Citation: Am. Viljoen et Be. Van Wyk, The chemotaxonomic significance of the phenyl pyrone aloenin in the genus Aloe, BIOCH SYST, 28(10), 2000, pp. 1009-1017

Authors: Van Wyk, BE Tilney, PM Winter, PJD

Citation: Be. Van Wyk et al., Four new genera of woody Apiaceae of Madagascar, TAXON, 48(4), 1999, pp. 737-745

Authors: Viljoen, AM Van Wyk, BE

Citation: Am. Viljoen et Be. Van Wyk, The chemotaxonomic value of two cinnamoyl chromones, aloeresin E and F, inAloe (Aloaceae), TAXON, 48(4), 1999, pp. 747-754

Authors: Kassu, A Dagne, E Abate, D Castro, A Van Wyk, BE

Citation: A. Kassu et al., Ethnomedical aspects of the commonly used toothbrush sticks in Ethiopia, E AFR MED J, 76(11), 1999, pp. 651-653