AndersenRingsted: Clinical and experimental investigations on Ileus. Acta chir. Scandinav.88 (1943), 475.
2.
CaseJ. T.: Umbrathor as a substitute for barium in the roentgen study of acute intestinal obstruction. Amer. J. Roentgenol.2 (1947), 422.
3.
Frimann-DahlJ.: On strangulating obstruction of the small bowel with special reference to cases with poor roentgen findings. Acta radiol.25 (1944), 480.
4.
KochF.: Clinical and roentgenological studies of acute obstruction of the small intestines due to adhesions and bands. Acta chir. Scandinav. Suppl. 88.
5.
KrookS.: Obstruction of the small intestine due to adhesions and bands. Acta chir. Scandinav. Suppl. 126.