1. World Health Organization: Effective medicines regulation: ensuring safety, efficacy and quality. 1999, Geneva: World Health Organization, WHO/EDM/2003.2
2. World Health Organization: Specifications for prepackaging antimalarial medicines. 1999, Geneva: World Health Organization, WHO/HTM/MAL/2005.1100
3. Abu Reid IO, El-Samani SA, Hag Omer Al, Khalil NY, Mahgoub KM, Everitt G, Grundstrom K, Lindgren B, Stjernstrom NE: Stability of drugs in tropics. A study in Sudan. Int Pharm J. 1990, 4: 6-10.
4. Risha PG, Shewiyo D, Msami A, Masuki G, Vergote G, Vervaet C, Remon JP: In vitro evaluation of the quality of essential drugs on the Tanzanian market. Trop Med Int Health. 2002, 7: 701-707. 10.1046/j.1365-3156.2002.00937.x.
5. International Council of Nurses: Counterfeits kill. 2005, Geneva: International Council of Nurses