1. Immel BK (2000) A brief history of the GMPs – the power of storytelling. BioPharm 3 (8) 26–36
2. International Conference on Harmonisation of Technical Requirements for Registration of Pharmaceuticals for Human Use (2002) Bracketing and matrixing designs for stability testing of new drug substances and products Q1D.
3. Bolton, S (1983) Factorial designs in pharmaceutical stability studies. J Pharm Sci 72 (4): 362–364
4. Henson E (2005) Conducting effective annual product review. J GXP Compliance, 6 (2):15–23
5. Barron, M (2003) Implementing successful stability testing operations. Pharm Tech 6(3), 14–21