Balan P., Kannappan N., and Chusena Narasimha Raju Bhimanadhuni. 2014. “Simultaneous Estimation of Olopatadine Hydrochloride and Ketorolac Tromethamine in Bulk and Pharmaceutical Dosage Form by RP-HPLC Method”. International Journal of Research in Pharmaceutical Sciences 5 (1):14-19. https://ijrps.com/home/article/view/3772.