Gupta, K. R., and S. S. Askarka. “SIMULTANEOUS ESTIMATION OF BEPOTASTINE BESILATE AND BENZALKONIUM CHLORIDE IN OPHTHALMIC FORMULATION BY RP-HPLC METHOD”. International Journal of Pharmacy and Pharmaceutical Sciences, vol. 8, no. 6, June 2016, pp. 225-33, https://journals.innovareacademics.in/index.php/ijpps/article/view/11430.