Praderi, Luis A, and Ricardo Parada. “Combined Radiation Therapy and Surgery in the Treatment of Esophageal Cancer”. Cirugía del Uruguay 45, no. Suplemento (March 2, 1975): 64–67. Accessed May 23, 2026. https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2860.