N. Kumar, Neeraj, S. Prasad, and R. Kumar, “A comparative study on the effect of intrathecal nalbuphine and buprenorphine as an adjuvant to 0.5% hyperbaric bupivacaine in elective infraumbilical surgeries”, SJHR-Africa, vol. 5, no. 11, p. 5, Nov. 2024, doi: 10.51168/sjhrafrica.v5i11.1812.