Subha Devanathan, Ilango Ganesan, Rangarajan R, and Divya Devanathan, “Comparison of nalbuphine and morphine as intrathecal adjuvant to 0.5% bupivacaine for post-operative analgesia in lower abdominal surgeries – A randomized and control study”, Asian J Med Sci, vol. 15, no. 4, pp. 18–24, Apr. 2024.