1. Gas in the portal veins of the liver in infants: A roentgenographic demonstration with postmortem anatomical correlation;Wolfe;Amer. J. Roentgen,1955
2. Neonatal necrotizing enterocolitis. A report of twenty-one cases with fourteen survivors;Stevenson;Amer. J. Surg.,1969
3. Gas embolization of the portal venous system;Susman;Amer. J. Roentgen.,1960
4. Portal vein gas due to administration of fluid via the umbilical vein;Schmidt;Radiology,1967
5. Gas in the intestinal wall and portal venous system in infants;Miskin;Canad. Med. Ass. J.,1969