Kritika Agnihotri, Pankaj Sharma, and J. K. Chouhan. “Corneal Collagen Cross-Linking (CXL): Effectiveness and Safety in Progressive Keratoconus in Pediatric Patients With Adequate Corneal Thickness”. International Journal of Health and Clinical Research, vol. 5, no. 1, Jan. 2022, pp. 555-61, https://www.ijhcr.com/index.php/ijhcr/article/view/4660.