1. Etiology and pathogenesis of traumatic dental injuries: a clinical study of 1298 cases;Andreasen;Scandinavian Journal of Dental Research,1970
2. Traumatic injuries of the teeth;Andreasen,1981
3. Traumatic injuries of the teeth;Andreasen,1981
4. Traumatic injuries of the teeth;Andreasen,1981
5. Traumatic injuries of the teeth;Andreasen,1981