1. The Rational Use of Drugs: Report of the Conference of Experts, Nairobi, Kenya;World Health Organization (WHO),1985
2. US Department of Commerce, International Trade Administration, 2016 Top Markets Report Pharmaceuticals: Overview and Key Findings.
3. World Finance, Trade in illegal medicine hits pharmaceutical sector. [Online]. Available: https://www.worldfinance.com/special-reports/trade-in-illegal-medicine-hits-pharmaceutical-sector.
4. Reuters, Customs group to fight $200 bln bogus drug industry, Reuters, 10-Jun-2010. [Online]. Available: https://www.reuters.com/article/us-customs-drugs/customs-group-to-fight-200-bln-bogus-drug-industry-idUSTRE65961U20100610 (Accessed: 29 June 2018).
5. Appendix WHO Member State Mechanism on Substandard / Falsely-Labelled / Falsified / Counterfeit (SSFFC) Medical Products Working Definitions;World Health Organization (WHO),2017