Kumar, B., K. Raut, and S. S. Routray. “Fentanyl and Fentanyl Plus Lidocaine on Attenuation of Haemodynamic Stress Response to Laryngoscopy: A Comparative Study in Controlled Hypertensive Patients Posted for Laparoscopic Cholecystectomy”. International Journal of Research in Medical Sciences, vol. 3, no. 12, Jan. 2017, pp. 3687-90, doi:10.18203/2320-6012.ijrms20151423.