Maharjan, S. “The Haemodynamic and Ventilatory Responses With I-Gel, Laryngeal Mask Airway and Tracheal Intubation During Laparoscopic Cholecystectomy”. Journal of Kathmandu Medical College, vol. 1, no. 2, May 2013, pp. 84-90, doi:10.3126/jkmc.v1i2.8143.