References
- Hanson, R. (1926) Some Anomalies, Deformities and Diseased Conditions of the Vertebrae during their Different Stages of Development, elucidated by Anatomical and Radiological Findings. Acta Chir. Scand., 60, pp. 309-368.
- Hellmer, H. (1932) Rontgenologische Beobachtungen uber Ossifikationsstorungen im Limbus Vertebrae (die sogen. persistierenden Wirbelkorperepiphysen). Acta Radiol., 13, pp. 483-517.
- Janker, R. (1950) Die Epiphysen der Wirbelkorper und ihre Veranderungen »Persistierende Wirbelkorperepiphysen». Fortschr. Rontgenstr., 41, pp. 597-606.
- Joisten, Chr. (1930) Uber persistierende Apophysen an der Lendenwirbelsaule. Arch. f. Orthop., 28, pp. 622-627.
- Schmorl, G. and Junghanns, H. (1932) Die gesunde und kranke Wirbelsaule im Rontgenbild, Georg Thieme, Leipzig
- Shanks, C. , Kerley, P. and Twining, E. W. (1939) A Textbook of X-Ray Diagnosis, Lewis, London