1. Akerele O (1991) Medicinal plants: policies and priorities. In: Akerele O, Heywood V, Synge H (eds) Conservation of medicinal plants. Cambridge University Press, Cambridge, pp 3–11
2. Altieri MA, Merrick LC (1988) Agroecology and in-situ conservation of native crop diversity in the third world. In: Wilson E, Peter F (eds) Biodiversity. National Academy of Sciences, Washington, DC, pp 361–369
3. Balee W (1993) Footprints of the forest: Ka’apor ethnobotany – the historical ecology of plant utilization by an Amazonian people. Columbia University Press, New York, p 416
4. Barrero AF, Oltra JE, Alvarez M, Raslan DS, Saude DA, Akssira M (2000) New sources and antifungal activity of sesquiterpene lactones. Fitoterapia 71:60–64
5. Berlin B, Kay P (1969) Basic color terms: their universality and evolution. University of California Press, Berkeley, p 178