C. Gurivi Reddy, R. Chidambaram. “Role of Renal Resistive Index in Unilateral Acute Renal Obstruction, Diabetic and Hypertensive Nephropathy”. Annals of the Romanian Society for Cell Biology, vol. 25, no. 2, Mar. 2021, pp. 913-22, http://annalsofrscb.ro/index.php/journal/article/view/1041.