S. S. Abbas, “Comparative Study between Ultrasound Guided Erector Spine Block versus Transversus Abdominis Plane Block for Post-Operative Analgesia in Laparoscopic Cholecystectomy: US-ESP Versus Transversus Abdominis Plane Block in Laparoscopic Cholecystectomy”, PJHS-Lahore, vol. 6, no. 5, pp. 166–170, May 2025.