1. UNODC. World Drug Report 2013 (United Nations publications, Sale No. E.13.XI.6), http://www.unodc.org/unodc/secured/wdr/wdr2013/World_Drug_Report_2013.pdf. Last accessed July 7th, 2014.
2. An update from the EU Early Warning System (March 2015);New psychoactive substances in Europe,2015
3. Global SMART update;UNODC;Special segment. Legal responses to NPS: Multiple approches to a multi-faceted problem,2015
4. DPR 309/90 and modifications (Law No. 79/2014), Italy.
5. An analytical approach to the forensic identification of different classes of new psychoactive substances (NPSs) in seized materials;Strano Rossi;Rapid Commun. Mass Spectrom.,2014