S. Mahbuba, M. M. M. Chy, S. Naz, M. Begum, S. S. Jahan, and Z. A. Sheikh, “Comparison of sensory and motor block outcome of fractionated versus single bolus dose administration of hyperbaric bupivacaine in elective cesarean section”, Med. res. chronicles, vol. 8, no. 4, pp. 317-324, Aug. 2021.