S. C. Shimmi, N. Jahan, and N. Sultana, “Effect of Ashwagandha (Withania Somnifera) Root Extract Against Gentamicin Induced Changes of Serum Urea and Creatinine Levels in Rats”, J Bangladesh Soc Physiol, vol. 6, no. 2, pp. 84–89, Feb. 2012.