Asif, M. ., N. . Waghamore, and A. . Hussain. “A Comparative Study of Intrathecal Morphine and Fentanyl As Additives to of 0.5% Hyperbaric Bupivacaine in Lower Segment Caesarean Section: A Prospective Randomized Double Blind Clinical Trial”. Journal of Neonatal Surgery, vol. 14, no. 30S, June 2025, pp. 864-76, https://www.jneonatalsurg.com/index.php/jns/article/view/7071.