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3. Gazin, Brooke, Lerner, Price (Utah) Pneumatosis Intestinalis: Roentgen Diagnosis and Surgical Management,Amer. J. Surg., 7:563–572, 1949.
4. MacKenzie, Ellen P., Tulane University, Pneumatosis Intestinalis: Review of Literature with Report of 13 Cases,Pediatrics, 7:537–549, 1951.
5. Stiennon, Arthur, (Univ. of Michigan): Pneumatosis Intestinalis in Newborn, AMA,Am. J. Dis. Child., 81:651–666, 1951.