Gupta, Sudhir, and Priyanka Goyal. “To Study the Effect of Beta Antagonist Esmolol on Bispectral Index and Arm Movement During Intubation”. Karnataka Anaesthesia Journal, vol. 3, no. 1, Jan. 2017, pp. 4-5, https://karnatakaanesthesiajournal.in/index.php/kaj/article/view/138915.