Palma, Eduardo, et al. “Resection and Descent of Rectal-Sigmoid Cancer at 77 Years of Age, With Eutaxic, Organic and Functional Reestablishment”. Cirugía Del Uruguay, vol. 52, no. 6, Apr. 1982, pp. 507-11, https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3504.