1. European Alliance for Access to Safe Medicines. 〈www.eaasm.eu〉
2. C. Clift, Combating Counterfeit, Falsified and Substandard Medicines Defining the Way Forward? Chatham House Briefing Papers, November 2010
3. WHO, Sixty-second World Health Assembly Item 12.9, Counterfeit Medical Products, April 2009. 〈http://aps.who.int/gb/ebhwa/pdf_files/A62/A62_13-en.pdf〉.
4. B.J. Venhuis, D.M. Barends, M.E. Zwaagstra, D. de Kaste, Recent Developments in Counterfeit and Imitations of Viagra, Cialis and Levitra, RIVM Report 370030001/2007, Bilthoven, 2007.
5. Screening suspected counterfeit Viagra® and imitations of Viagra® with near-infrared spectroscopy