Journal articles
2007
- . (2007). Chemical variation in selected Karoo medicinal plants. South African Journal Of Botany, 73(2). http://doi.org/10.1016/j.sajb.2007.02.135 (Original work published 4/2007AD)
- . (2007). Chemistry and pharmacology of oxyprenylated secondary plant metabolites. Phytochemistry, 68(7), 939 - 953. http://doi.org/10.1016/j.phytochem.2007.01.019 (Original work published 4/2007AD)
2011
- . (2011). Chemotaxonomic evidence suggests that Eriocephalus tenuifolius is the source of Cape chamomile oil and not Eriocephalus punctulatus. Biochemical Systematics And Ecology, 39(4-6). http://doi.org/10.1016/j.bse.2011.04.003 (Original work published 8/2011AD)
- . (2011). Chromosome numbers of Umbelliferae (Apiaceae) from Africa south of the Sahara. Botanical Journal Of The Linnean Society, 85(3), 195 - 208. http://doi.org/10.1111/j.1095-8339.1982.tb02586.x (Original work published 10/1982AD)
1995
- . (1995). Chemotaxonomic significance of anthraquinones in the roots of asphodeloideae (asphodelaceae). Biochemical Systematics And Ecology, 23(3). http://doi.org/10.1016/0305-1978(94)00094-W (Original work published 4/1995AD)
1996
- . (1996). Chemotaxonomy of Commercial Buchu Species Agathosma betulina and A. crenulata . Journal Of Essential Oil Research, 8(3), 229 - 235. http://doi.org/10.1080/10412905.1996.9700607 (Original work published 05/1996AD)
2002
- . (2002). Chemotypic differentiation in indigenous populations of Foeniculum vulgare var. vulgare in Israel. Biochemical Systematics And Ecology, 30(8). http://doi.org/10.1016/S0305-1978(02)00019-4 (Original work published 8/2002AD)
2012
- . (2012). Chemotypical variations in Withania somnifera lead to differentially modulated immune response in BALB/c mice. Vaccine, 30(6). http://doi.org/10.1016/j.vaccine.2011.12.031 (Original work published 2/2012AD)
1994
- . (1994). Chiral compounds of essential oils XIV: Simultaneous stereoanalysis of buchu leaf oil compounds. Phytochemical Analysis, 5(2), 61 - 67. http://doi.org/10.1002/pca.2800050204 (Original work published 03/1994AD)
2010
- . (2010). Chlorinated and diepoxy withanolides from Withania somnifera and their cytotoxic effects against human lung cancer cell line. Phytochemistry, 71(17-18). http://doi.org/10.1016/j.phytochem.2010.08.019 (Original work published 12/2010AD)
1976
- . (1976). CINQ alcaloides nouveaux de Strychnos henningsii. Phytochemistry, 15(2). http://doi.org/10.1016/S0031-9422(00)89013-5 (Original work published 1/1976AD)
2014
- . (2014). Classification of the indigenous forests of Mpumalanga Province, South Africa. South African Journal Of Botany, 90. http://doi.org/10.1016/j.sajb.2013.09.010 (Original work published 01/2014AD)
2000
- . (2000). Clinical and analytical aspects of pyrrolizidine poisoning caused by South African traditional medicines. Therapeutic Drug Monitoring, 22(3), 302-6. Retrieved from http://www.ncbi.nlm.nih.gov/pubmed/10850397 (Original work published 06/2000AD)
2005
- . (2005). Clozapine attenuates the locomotor sensitisation and the prepulse inhibition deficit induced by a repeated oral administration of Catha edulis extract and cathinone in rats. Behavioural Brain Research, 160(2). http://doi.org/10.1016/j.bbr.2005.01.002 (Original work published 5/2005AD)
1990
- . (1990). CNS activity of Mentha rotundifolia andMentha longifolia essential oil in mice and rats. Phytotherapy Research, 4(6). http://doi.org/10.1002/ptr.2650040606 (Original work published 12/1990AD)


