D'Auria, Agustín, et al. “Closed Occlusion Due to Invagination Colon Submucosal Lipoma”. Cirugía Del Uruguay, vol. 52, no. 1, Mar. 1982, pp. 87-89, https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/3271.