Morge, Asha S., M. D. Kulkarni, and S. M. Doifode. 2017. “Preserved to Preservative Free Prostaglandin Analogues in Primary Open Angle Glaucoma”. International Journal of Basic & Clinical Pharmacology 2 (6):696-704. https://www.ijbcp.com/index.php/ijbcp/article/view/1352.