1. Changes in the Knee Joint at Various Ages;Bennett, G.A.; Waine, H.; Bauer, W.,1942
2. Benninghoff, A. (1925). Z. Zellforsch. mikr. Anat., 2, 783.
3. Bostrom, H., and Mansson, B. (1953). Arkiv. Kemi., 6, 17 and 23.
4. Bryant, J. H., Leder, I. G., and Stetten, D. (1958). Arch. biochem.
5. The Pathology of Articular and Spinal Diseases;Collins, D.H.,1949