Sujeet Shekhar Sinha, Bhaumik B Barad, T Chadru, and Kumaresan Natarajan, “Comparison of Pneumatic Vs Holmium Yag Laser in Proximal Ureteral Stones-A Retrospective Observational Study”, Int. J. Heal. Clin. Res., vol. 4, no. 14, pp. 338–344, Aug. 2021.