P. K. Sharma, V. Aggarwal, S. Baweja, R. Nagori, P. Katti, and M. K. Chabbra, “Non-invasive preoperative assessment of ureteral stone impaction using peri-calculus ureteral thickness on Non-Contrast CT (NCCT) scan: A prospective Study”, Surgical Review: Int J Surg Trauma Orthoped, vol. 6, no. 2, pp. 67-71, Apr. 2020.