A. A. Khan, K. Ali, Sami Ur Rehman, A. Ali, and M. Adrees, “Comparison of the Mean Duration of Postoperative Analgesia of Epidural Dexmedetomidine and Fentanyl as an Adjuvant to 0.2% Ropivacaine in Elective Abdominal Surgeries”, IJBR, vol. 3, no. 6, pp. 1321–1325, Jun. 2025, doi: 10.70749/ijbr.v3i6.2877.