Batra, R., P. Batra, P. Bokariya, and R. Kothari. “Role of Extracorporeal Shock Wave Lithotripsy in Management of Upper Ureteric Stones”. African Journal of Urology, vol. 24, no. 3, Oct. 2018, pp. 186-90, doi:10.1016/j.afju.2018.05.006.