GYANENDRA KUMAR, RAKESH CHANDRA CHAURASIA, and S.P. SINGH. 2017. “Ocular Effect of Preservative Free and Bak Containing Travoprost - a Tertiary Care Hospital Based Study”. International Journal of Pharma and Bio Sciences 8 (3):302-9. https://doi.org/10.22376/ijpbs.2017.8.3.p302-309.