Tirupathi, B., and G. Venkateshwarlu. “INDIRECT SPECTROPHOTOMETRIC ESTIMATION OF DRUGS USING CERIUM (IV) AND RHODAMINE-B AS ANALYTICAL REAGENT”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 1, Jan. 2016, pp. 62-66, https://journals.innovareacademics.in/index.php/ijpps/article/view/7808.