1. United Nation Office on Drugs and Crime. The Challenge of New Psychoactive Substances;UNODC,2013
2. Advisory Council on the Misuse of Drugs. Consideration of the Novel Psychoactive Substances (‘Legal Highs’);ACMD,2011
3. Psychoactive Substances Act 2016,2016
4. New Psychoactive Substances in Europe. An Update from the EU Early Warning System;Evans-Brown,2015
5. EMCDDA—Europol 2014 Annual Report on the Implementation of Council Decision 2005/387/JHA;EMCDDA-Europol,2015