Sowmya Madihalli Janardhan Iyengar, Shankar Kantharaju, and Shubha Mysore Ramesh. “Efficacy of Intraoperative Subanaesthetic Dose of Ketamine on Post-Operative Analgesia for Patients Undergoing Single Level Lumbar Discectomy under General Anesthesia: A Placebo Control Randomized Clinical Study”. Asian Journal of Medical Sciences 14, no. 11 (November 1, 2023): 53–59. Accessed July 17, 2024. https://nepjol.info/index.php/AJMS/article/view/56489.