1. The pharmacohystory of Cannabis sativa;Mechoulam,1986
2. Cannabis. Quels effets sur le comportement et la santé. Expertise collective INSERM;Aquatias,2001
3. Science and Technology;Ninth report on therapeutic uses of cannabis [formato electrónico],1998
4. Institute of Medicine. Marijuana and medicine [formato electrónico] 1999; 196(196) [consultado 03/06/2003]. Disponible en: http://www.bob.nap.edu/books/0309071550/html
5. GW Pharma looks for cannabis partner;Scrip,2003