REFERENCES
- Wangensteen, O. H.: Intestinal Obstruction. Springfield, Illinois, Charles C Thomas, 1945.
- Frimann-Dahl, J.: Roentgen Examinations in Acute Abdominal Diseases. Springfield, Illinois, Charles C Thomas, 1951.
- Hodges, P. C. and Miller, R. E.: Intestinal obstruction. Am. J. Roentgenol. 74:1015–1022, 1955.