Dr. Deep Das. “Ultrasound-Guided Versus Peripheral Nerve-Stimulator-Guided Supraclavicular Brachial Plexus Block for Elective Upper-Limb Surgery: An Observational Comparative Study”. International Journal of Pharmacy Research & Technology (IJPRT), vol. 15, no. 2, July 2025, pp. 431-5, https://www.ijprt.org/index.php/pub/article/view/718.