1. U. Nations, World drug report, United Nations publication, (2020).
2. European Monitoring Centre for Drugs and Drug Addiction: European Monitoring Centre for Drugs and Drug Addiction has a vital role in the UK’s ability to respond to illicit drugs and organised crime;Roman-Urrestarazu;BMJ,2018
3. Electrochemical strategies for adulterated heroin samples;Florea;Anal. Chem.,2019
4. Cue-induced craving in dependence upon prescription opioids and heroin;McHugh;Am. J. Addict.,2014
5. E. Addiction, European Drug Report: Trends and developments, (2014).