S K. Gahlot, Reema Chaudhary, and Chandra Shekhar Singh. “Effect of Dexmedetomidine & Clonidine on Intracranial Pressure With Help of Optic Nerve Sheath Diameter During Laparoscopic Surgery”. International Journal of Health and Clinical Research, vol. 4, no. 21, Dec. 2021, pp. 19-26, https://ijhcr.com/index.php/ijhcr/article/view/3321.