Interesting articles on the culture and tradition of coca
- The coca leaf, benefits of traditional use smothered by drug policy, interview with Pien Metaal (TNI), Comunidad segura, July 30, 2007
- Coca and cocaine: their role in "traditional" cultures in south America, Antony R. Henman, The Journal of Drug Issues, 20(4), 577-588, 1990 (pdf)
- Observations on Consciousness Alteration: Why Coca Leaf Should be Available as a Recreational Drug, Andrew T. Weil, M.D., Journal of Psychedelic Drugs, 9(1), Jan-Mar 1977: 75-78.