K.Chandra Sekhar, V.Balamurali Krishna, R.Amulya, G.Mamatha, and K.Satish Kumar. “Carotid Doppler in Evaluation of a Cute Cerebral Stroke and Its Correlation With Computed Tomography of Brain”. International Journal of Health and Clinical Research, vol. 4, no. 19, Nov. 2021, pp. 337-45, https://www.ijhcr.com/index.php/ijhcr/article/view/3140.