1. European Council Council decision 2005/387/JHA of 10 may 2005 on the information exchange, risk-assessment and control of new psychoactive substances 2005 http://eur-lex.europa.eu/legal-content/en/ALL/?uri=CELEX:32005D0387
2. European Commission Regulation (EC) no. 1920/2006 of the European Parliament and of the Council of 12 December 2006 on the European monitoring Centre for Drugs and Drug Addiction (recast) 2006 http://eur-lex.europa.eu/legal-content/EN/TXT/?uri=CELEX:32006R1920
3. European Monitoring Centre for Drugs and Drug Addiction EU drug markets report 2016 https://dx.doi.org/10.2810/219411
4. European Monitoring Centre for Drugs and Drug Addiction European drug report: Trends and developments 2016 https://dx.doi.org/10.2810/04312
5. The new drug phenomenon;Brandt;Drug Test Anal,2014