1. World Drug Report 2022;UNODC,2022
2. United Nations Office on Drugs and Crime. Fentanyl and its analogues—50 years on. UNODC Global Smart Update vol. 17, 2017. https://www.unodc.org/documents/scientific/Global_SMART_Update_17_web.pdf (access date: 24.03.2023).
3. Notes from the field: opioid-involved overdose deaths with fentanyl or fentanyl analogs detected—28 states and the District of Columbia, July 2016–December 2018;O’Donnell;Morb. Mortal. Wkly Rep.,2020
4. National Forensic Laboratory Information System: 2021 Annual Report;U.S. Drug Enforcement Administration, Diversion Control Division,2022
5. Interaction of pfluorofentanyl on cloned human opioid receptors and exploration of the role of Trp-318 and His-319 in mu-opioid receptor selectivity;Ulens;J. Pharmacol. Exp. Ther.,2000