1. Bitter water made sweet with a piece of wood inspired by Moses: Exodus 15:22–25; for a useful reference work on herbal drug substances, see Merck Index, 8th edition.
2. Quinghaosu (Artemisinin): an antimalarial drug from China;Klayman;Science,1985
3. Problems and prospects of discovering new drugs from higher plants by pharmacological screening;Farnsworth,1977
4. Natural products as a resource for new drugs;Clark,1996
5. Role of chemistry in the discovery of useful plant-derived drugs;Wambebe,1998