Seetharaman R., Lakshmi K.S., Dinesh Kumar Boggavarappu, Hariprasad G., and Kumud Ranjan Ravi, “Determination of Balofloxacin in Pharmaceutical formulation by Zero, First and Second order Derivative Spectrophotometric methods”, Int. J. Res. Pharm. Sci., vol. 2, no. 3, pp. 438–443, Aug. 2011.