References
- Bailey, W. (1947) Observations on the etiology and frequency of spondylolisthesis and its precursors. Radiology, 48, p. 107.
- Bakke, S. N. (1937) Uspesifikke affeksjoner i lumbo-sacralregionen (Norwegian). Nord. Kir. Foren:s Forhandl, 21, p. 519.
- Bates, M. (1939) The etiology of spondylolisthesis, J. Bone and Joint Surg, 21, p. 879.
- Friberg, S. (1939) Studies on spondylolisthesis. Acta chir. Scandinav. Suppl
- Galluccio, A. C. (1944) Spondylolisthesis, general consideration with emphasis on radiological aspects. Radiology, 42, p. 143.
- Garland, L. H. and Thomas, S. F. (1946) Spondylolisthesis. Am. J. Roentgenol, 55, p. 275.
- Hammerbeck, W. (1941) Synchondrose der rechten Bogenwurzel und linksseitige Spondylosis interarticularis u. S. W. Fschr. Rontgenstr, 64, p. 72.
- Kleinberg, S. and Burman, M. S. (1942) Spondylolisthesis, report of 3 cases in adults with forward displacement of the vertebra below the level of the laminar defect. J. Bone and Joint Surg, 24, p. 899.
- Meshan, I. (1945) Spondylolisthesis. Am. J. Roentgenol, 53, p. 230.
- Reischauer, F. (1938) Ermudungs- und Ubernutzungserscheinungen am Knochen. Fschr. Rontgenstr, 58, p. 354.
- Schmorl, G. and Junghans, H. (1932) Die gesunde und kranke Wirbelsaule im Rontgenbild, Georg Thieme, Leipzig