Lal, Manohar, and Jaspreet Kaur. “TLC and HPLC Enantioseparation of Amino Containing Pharmaceutical Using Levofloxacin As Chiral Derivatizing Reagent in Indirect Method”. Asian Journal of Chemistry, vol. 29, no. 9, July 2017, pp. 2079-83, doi:10.14233/ajchem.2017.20831.