Dr. Antu Datta, Dr. Biswajit Sutradhar, and Dr. Ranjit Reang. “A Comparative Study of Fentanyl With Ropivacaine Versus Dexmedetomidine With Ropivacaine for Epidural Anaesthesia in Lower Limb Orthopaedic Surgery: A Randomized Controlled Trial”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 16, no. 2, July 2026, pp. 626-35, https://ijprt.org/index.php/pub/article/view/2342.