USP (2007) Matrix of Drug Quality Reports in USAID-assisted Countries by the U.S. Pharmacopeia Drug Quality and Information Program. Rockville: The United States Pharmacopeial Convention Inc. (http://www.usp.org/pdf/EN/dqi/ghcDrugQualityMatrix.pdf)
AIFA (2007) Farmaci veri, farmaci falsi. Bollettino d’informazione sui farmaci (BIF) XIV n.3. Agenzia Italiana del Farmaco.