Datta, Pramatha Nath, and Arijit Roy. “Role of Intraperitoneal Instillation of Bupivacaine After Laparoscopic Cholecystectomy for Post-Operative Pain Management: A Randomized Controlled Trial”. International Surgery Journal 7, no. 10 (September 23, 2020): 3239–3245. Accessed October 17, 2025. https://www.ijsurgery.com/index.php/isj/article/view/6362.