Rao, B. Dinakar, and K. Chandra Prakash. “Comparative Study of Intrathecal Bupivacaine 0.5% With Bupivacaine 0.5% and Buprenorphine Low Dose for Postoperative Analgesia in Lower Abdominal Surgeries”. International Surgery Journal 3, no. 1 (December 13, 2016): 253–257. Accessed April 30, 2026. https://www.ijsurgery.com/index.php/isj/article/view/577.