Sarpal, R., T. Chaudhary, M. Biswas, S. Agarwal, and A. Mittal. “Percutaneous Nephrolithotripsy for Renal Pelvis Stone in a Crossed Fused Ectopic Kidney: A Case Report”. International Journal of Research in Medical Sciences, vol. 4, no. 11, Dec. 2016, pp. 5080-4, doi:10.18203/2320-6012.ijrms20163823.