1. Screening plants for new medicines;Farnsworth,1988
2. Plant-derived natural products in drug discovery and development: An overview;Balandrin,1993
3. Higher plants: The sleeping giants for drug development;Farnsworth;Am J Pharm,1976
4. Potential consequences of plant extinction in the United States on the current and future availability of prescription drugs;Farnsworth;Econ Bot,1985
5. Monetizing the pharmacological benefits of plants;Principe,1996