Jain, Isha, et al. “Comparison of Hemodynamic Effects of Intravenous Labetalol Plus Intravenous Fentanyl and Intravenous Fentanyl Alone for Attenuating Reflex Responses to Laryngoscopy and Intubation: A Prospective Randomized Controlled Trial”. Asian Journal of Medical Sciences, vol. 14, no. 6, June 2023, pp. 71-76, https://nepjol.info./index.php/AJMS/article/view/52489.