Freitas, D. G. de, A. S. Garcia, and O. de Freitas Filho. “Transitional Cell Carcinoma of the Ureter and Struvite Calculi”. São Paulo Medical Journal, vol. 117, no. 3, May 1999, pp. 129-31, https://periodicosapm.emnuvens.com.br/spmj/article/view/2535.