1. Decorte T (2000) The taming of Cocaine: cocaine use in European and American Cities. Brussels VUB University Press 499 p.
2. Beck F, Legleye S, Spilka S (2007) Cannabis, cocaïne, ecstasy: entre expérimentation et usage régulier. In: Beck F, Gautier A, Guilbert P, editors. Baromètre santé 2005. INPES ed. St Denis: INPES 168–221
3. Karila L, Beck F, Legleye S, Reynaud M (2009) [Cocaine: from recreational use to dependence]. Rev Prat 59:821–5
4. Zawilska JB (2011) “Legal highs?-new players in the old drama. Curr Drug Abuse Rev 4:122–30
5. Johnson LA, Johnson RL, Alfonzo C (2011) Spice: a legal marijuana equivalent. Mil Med 176:718–20