1. Evaluation of Plectranthus esculentus N.E.Br. as a Potential Vegetable Crop;Allemann,2002
2. Domestication and improvement of three indigenous African vegetables (Amaranths, cucurbits and Plectranthus esculentus);Allemann,2002
3. Production and marketing of fresh cassava products in South Africa;Allemann,2003
4. Potential of cassava production in the Bathurst region of the Eastern Cape province of South Africa;Allemann,2003
5. Chemical composition of South African Plectranthus esculentus N.E.Br. tubers;Allemann;South African Journal of Science,2003