PERDOMO, Roberto. Spontaneous pneumoperitoneum in the course of appendicular peritonitis. Cirugía del Uruguay, [S. l.], v. 36, n. 2, p. 117–119, 2020. Disponível em: https://replica-revista.scu.org.uy/index.php/cir_urug/article/view/1862. Acesso em: 15 jun. 2026.