Bhagat, Dr.Manisha, Dr.Mukesh Kumar, Dr.Rajesh Khanna, and Dr.Usha Suwalka. 2014. “Comparative Study Of The Effect Of Esmolol, Fentanyl And Their Combination For Attenuating Haemodynamic Responses Of Laryngoscopy And Intubation: Comparative Study Of The Effect of Esmolol, Fentanyl And Their Combination”. National Journal of Integrated Research in Medicine 5 (3):1-6. http://nicpd.ac.in/ojs-/index.php/njirm/article/view/724.