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2. International Conference on Harmonisation (ICH) of Technical Requirements for Registration of Pharmaceuticals for Human Use, ICH Harmonised Tripartite Guideline Q3A(R2): Impurities in New Drug Substances, Step 4, October 25, 2006. Available at: http://www.ich.org/.
3. International Conference on Harmonisation (ICH) of Technical Requirements for Registration of Pharmaceuticals for Human Use, ICH Harmonised Tripartite Guideline Q3B(R2): Impurities in New Drug Products, Step 4, June 2, 2006. Available at: http://www.ich.org/.
4. Applications of hyphenated LC-MS techniques in pharmaceutical analysis
5. The use of liquid chromatography-mass spectrometry for the identification of drug degradation products in pharmaceutical formulations