B. Prathap, S.S. Rajendran, A. Dinakar, G. Srinivasa Rao, Ashok Kumar, and C. Roosewelt. “Simultaneous Determination of Gatifloxacin and Ambroxol Hydrochloride from Tablet Dosage Form Using RP-HPLC”. International Journal of Research in Pharmaceutical Sciences, Vol. 1, no. 3, July 2010, pp. 325-7, https://pharmascope.org/ijrps/article/view/862.