1. Traumatic Injuries of the Teeth;Andreasen,1972
2. Intraalveolar root fractures: Radiographic and histologic study of 50 cases;Andreasen;J. Oral Surg.,1957
3. The American System of Dentistry;Black,1886
4. Therapy for the divergent pulpless tooth by continued apical formation;Frank;J.A.D.A.,1966
5. Non-surgical therapy for the perforative defect of internal resorption;Frank;J.A.D.A.,1973