1. A Progress Report of an Investigation of Apical Root Resorption of Vital Permanent Teeth;Ketcham;Int. J. Orthodontia,1929
2. Relation of Malnutrition to Dental Pathology;Marshall;Int. J. Orthodontia,1931
3. Root Resorptions and Their Relation to Pathologic Bone Formation. Part I;Becks;Int. J. Orthodontia,1936
4. Root Resorption;Oppenheim;Angle Orthodontist,1936
5. A Comparative Study in Root Resorption in Permanent Teeth;Rudolph;J. Am. Dent. A,1936