A. Qureshi, M., Javaid-ur-Rehman, and T. Bajwa. “Effect of 0.5% Bupivacaine at the Surgical Bed After Laparoscopic Cholecystectomy”. Esculapio Journal of SIMS, vol. 8, no. 4, Aug. 2023, pp. 172-5, https://esculapio.pk/journal/index.php/journal-files/article/view/763.