1. European Monitoring Centre for Drugs and Drug Addiction. European Drug Report 2018: Trends and Developments. Publications Office of the European Union, Luxembourg; 2018.
2. Koeppe H, Zeile K, Ludwig G. Patent DE1545591 – Verfahren zur Herstellung von α-Aminoketonen mit heterocyclischer Aminogruppe. 1965.
3. European Monitoring Centre for Drugs and Drug Addiction. Europol 2014 Annual Report on the implementation of Council Decision 2005/387/JHA. Publications Office of the European Union, Luxembourg; 2015. http://www.emcdda.europa.eu/attachements.cfm/att_240380_EN_TDAN15001ENN.pdf.
4. https://hyperreal.info/. [Accessed 2018 May 15].
5. http://bluelight.org/. [Accessed 2018 May 15].