1. International Conference on Harmonization (ICH) Guidelines Q3A (R2). Impurities in new drug substances,2006
2. Impurities in New Drug Products Q3B(R2), (2006). http://www.ich.org/fileadmin/Public_Web_Site/ICH_Products/Guidelines/Quality/Q3B_R2/Step4/Q3B_R2__Guideline.pdf (accessed December 1, 2017).
3. 9. Assay and impurities: method development as part of analytical life cycle management;Clarke,2020
4. Recent advances in chromatography for pharmaceutical analysis;D'Atri;Anal. Chem.,2019
5. Current trends in HPLC column usage;Majors;LCGC North Am.,2012