References
- Andersen and Ringsted (1943) Clinical and Experimental Investigations on Ileus. Acta chir. Scand, 88, p. 475.
- Braun-Wortmann (1924) Der Darmverschluss. Berlin
- Frimann-Dahl, J. (1944) On strangulating obstruction of small bowel with special reference to cases with poor roentgen findings. Acta radiol, 25, p. 480.
- Ochsner, A. (1933) X-ray diagnosis of ileus. Surg. Gynec. & Obst, 56, p. 419.
- Wangensteen, O. (1948) Intestinal Obstruction.