1. Council Decision 2005/387/JHA of 10 may 2005 on the information exchange, risk assessment and control of new psychoactive substances. Off J L 127, 20/5/2005, 32–37. Available at http://eurlex.europa.eu/LexUriServ/LexUriServ.do?urie=CELEX:32005D0387:EN/HTML
2. UNODC (United Nations Office on Drugs and Crime) (2017) Early warning advisory on new psychoactive substances: legal responses. Available at https://www.unodc.org/LSS/page/NPS/LegalResponses
3. European Monitoring Centre for Drugs and Drug Addiction (EMCDDA) (2020) European Drug Report. Trends and development 2020. Available at https://www.emcdda.europa.eu/system/files/publications/13236/TDAT20001ENN_web.pdf
4. Australian Criminal Intelligence Commission. Illicit drug data report 2015–2016. Available at www.acic.gov.au
5. UNODC (United Nations Office on Drugs and Crime) World Drug Report 2018 (Vienna: UNODC). Available at wdr.unodc.org