1. Ethnobotany and the Search for New Drugs;Farnsworth,1994
2. Natural products in drug discovery and development;Cragg;J. Nat. Prod.,1997
3. The continuing contribution of biodiversity to drug discovery;Harvey;Curr. Opin. Drug Discovery Dev.,1998
4. Exploration of nature’s chemodiversity;Verpoorte;Drug Discovery Today,1998
5. The impact of natural products on drug discovery;Grabley,1999