Ahmed, T., M. H. Kabir, .-. Md Khairuzzaman, M. M. Ahsan, M. Jahan, and M. S. Islam. “Outcome of Pcnl in Proximal Ureteric Stone: A Comparative Study With Laparoscopic Retrieval”. Bangladesh Journal of Urology, vol. 21, no. 1, Oct. 2020, pp. 25-30, doi:10.3329/bju.v21i1.49748.