1. ICH 2003.Q1A(R2): Stability Testing of New Drug Substances and Products. Retrieved June 3, 2013, fromhttp://www.ich.org/products/guidelines/quality/article/quality-guidelines.html.
2. ICH 1996.Q1B: Stability Testing: Photostability Testing of New Drug Substances and Products. Retrieved June 3, 2013, fromhttp://www.ich.org/products/guidelines/quality/article/quality-guidelines.html.
3. ICH 2006.Q3A(R2): Impurities in New Drug Substances. Retrieved June 3, 2013, fromhttp://www.ich.org/products/guidelines/quality/article/quality-guidelines.html.