1. Youden, W. J., and Steiner, E. H. (1975). Statistical Manual of the Association of Official Analytical Chemists, pp. 33–36, 70–71, 82–83, The Association of Official Analytical Chemists, Arlington.
2. United States Pharmacopeia, 23rd Edition, National Formulary 18, Unites States Pharmacopoeial Convention, Rockville, USA, 1995.
3. Guidelines prepared within the International Conference on Harmonisation of Technical Requirements for the Registration of Pharmaceuticals for Human Use (ICH), Validation of Analytical Procedures, Q2A Definitions and Terminology, 1995, pp. 1–5, http://www.ich.org/
4. Guidelines prepared within the International Conference on Harmonisation of Technical Requirements for the Registration of Pharmaceuticals for Human Use (ICH), Validation of Analytical Procedures, Q2B Methodology, 1996, pp. 1–8, http://www.ich.org/
5. Food and Drug Administration (FDA), Department of Health and Human Services, http://www.fda.gov/ (Accessed on January 31, 2008).