1. United Nations Office for Drugs and Crime (UNODC).Early Warning Advisory on New Psychoactive Substances.2018. Accessed 10thAugust 2018.https://www.unodc.org/LSS/Page/NPS
2. European Monitoring Centre for Drugs and Drug Addiction (EMCDDA‐Europol).Annual Report on the implementation of Council Decision 2005/387/JHA.2017. Accessed 18thOctober 2018.http://www.emcdda.europa.eu/publications/implementation‐reports/2017_en
3. Legislative Measures’ Impact on the New Psychoactive Substances Market
4. European Commission Report: Flash Eurobarometer 401: Young people and drugs. Luxembourg: TNS Political & Social.2014. Accessed 18thOctober 2018.http://ec.europa.eu/public_opinion/flash/fl_401_present_en.pdf
5. European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) Legal approaches to controlling new psychoactive substances.2014. Accessed 18thOctober 2018.http://www.emcdda.europa.eu/topics/pods/controlling‐new‐psychoactive‐substances