1. World Health Organization. WHO Traditional Medicine Strategy 2002–2005. Geneva: World Health Organization; 2002.
2. Zang X. Traditional medicine: its importance and protection. In: Twarog S, Kapoor P, editors. Protecting and promoting traditional knowledge: systems, national experiences and international dimensions. Part I. The role of traditional knowledge in health care and agriculture. New York: United Nations; 2004. p. 3–6.
3. Kapoor LD. Handbook of ayurvedic medicinal plants. Baca Raton, FL: CRC Press; 1990. p. 317–29.
4. Chopra RN, Chopra IC, Verma BS. Supplementary to glossary of Indian medicinal plants. New Delhi: National Institute of Science Communication, Council of Scientific and Industrial Research; 1998. p. 10–1.
5. Russo A, Borelli F. Bacopa monniera, a reputed nootropic plant: an overview. Phytomedicine. 2005;12:305–17.