@article{isen_2012,  title={Single-session ureteroscopic pneumatic lithotripsy for the management of bilateral ureteric stones},  volume={38},  ISSN={1677-5538},  url={https://doi.org/10.1590/S1677-55382012000100009},  DOI={10.1590/S1677-55382012000100009},  number={1},  journal={International braz j urol},  publisher={Sociedade Brasileira de Urologia},  author={Isen, Kenan},  year={2012},  month={Jan},  pages={63–68} }