1. United Nations Office of Drugs and Crime: Recommended methods for the identification and analysis of amphetamine. Methamphetamine and their ring-substituted analogues in seized materials. UNODC, New York, USA (2006)
2. United Nations Office on Drugs and Crime: World drug report 2016. UNODC, Vienna (2016)
3. Cary, P.L.: Designer drugs: what drug court practitioners need to know. Drug Court Pract. Fact Sheet IX, 1–13 (2014)
4. Swortwood, M.J.: Comprehensive forensic toxicological analysis of designer drugs. Doctor of Philosophy, Florida International University, Florida, USA (2013)
5. Smith, M.C.F.: But what of designer drugs? Adv. Psychiatr. Treat. 17, 158 (2011)