Dr. S. Rama Krishna. “Ultrasound Versus Nerve Stimulator-Guided Technique of Supraclavicular Nerve Block for Upper Limb Surgery: A Prospective Randomized Comparative Study”. Asian Pacific Journal of Health Sciences, vol. 5, no. 3, Sept. 2018, pp. 103-8, doi:10.21276/apjhs.2018.5.3.14.