V. R. . Ankalwar and R. . Tambey, “Evaluation of intrathecal buprenorphine as an adjuvant to bupivacaine for lower abdominal surgeries”, Int J of Pharmc Res, vol. 3, no. 4, pp. 87–90, Dec. 2012, Accessed: Feb. 17, 2026. [Online]. Available: https://ssjournals.co.in/index.php/ijpr/article/view/1205