1. Franklin, J. B.: Unpublished material, Milwaukee, Wis.
2. Das Gesetz der Transformation der Knochen;Wolff,1892
3. Tissue Changes Particularly of Bone Incident to Tooth Movement;Oppenheim;Am. Orthodontist,1911
4. Tissue Changes Particularly of Bone Incident to Tooth Movement;Oppenheim;Am. Orthodontist,1912
5. Brodie, A. G.: Unpublished material given in Graduate Department of Orthodontics, University of Illinois.