Ozair, Erum, et al. “A Comparative Evaluation of Dexmedetomidine and Fentanyl to Attenuate Hemodynamic Response to Laryngoscopy and Intubation”. Asian Journal of Medical Sciences, vol. 9, no. 1, Jan. 2018, pp. 65-72, https://nepjol.info/index.php/AJMS/article/view/18472.