Singh, A., G. Misra, and J. Saran. “Comparing Postoperative Analgesic Effect of Subcostal Transverse Abdominis Plane Block and Intraperitoneal Installation of Ropivacaine After Laparoscopic Cholecystectomy”. Academia Anesthesiologica International, Vol. 9, no. 1, Aug. 2024, pp. 1-5, https://www.aijournals.com/index.php/aan/article/view/2577.