Suresh, A., N. Sanji, N. H. Nagarajappa, S. G. Hanumanthareddy, and P. M. Kamath. “A Comparative Study of Efficacy and Safety of Tamsulosin With Nifedipine Versus Tamsulosin Alone As Medical Expulsive Therapy for Lower Ureteric Stones”. International Journal of Basic & Clinical Pharmacology, vol. 8, no. 10, Sept. 2019, pp. 2278-83, doi:10.18203/2319-2003.ijbcp20194271.