Parikh, C., V. Gurjar, and S. Shah. “Tamsulosin Versus Tadalafil As Medical Expulsive Therapy of Distal Ureteric Stones: A Comparative Study”. International Surgery Journal, vol. 6, no. 3, Feb. 2019, pp. 982-8, doi:10.18203/2349-2902.isj20190835.