1. Arena, J. M., Sarazen, P. and Baylin, G. J. (1951). Pediatrics. 8.
2. Baker, S. L. (1946). J. Path. Bact., 58.
3. Brailsford, J. F. (1943). Brit. J. Radiol., 16. 129.
4. The Radiology of Bones and Joints;Brailsford, J.F.,1948
5. Amer;Caffey, J.; Silverman, W.A.;J. Roentgenol,1945