LORENZELLI, Juan A.; GARCIA PIERCE, Héctor. Sigmoid perforation due to baritoma. Cirugía del Uruguay, [S. l.], v. 48, n. 2, p. 155–157, 1978. Disponível em: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/2970. Acesso em: 14 jun. 2026.