Vives, J. S., E. C. Serna, F. U. H. Bustos, and G. G. Y. Herrera. “Spontaneous Pneumoperitoneum Secondary to Intestinal Pneumatosis: An Uncommon Cause of Acute Abdomen”. International Journal of Research in Medical Sciences, vol. 9, no. 8, July 2021, pp. 2455-8, doi:10.18203/2320-6012.ijrms20212795.