1. Injured anterior teeth in children: a preliminary discussion;Gelbier;British Dental Journal,1967
2. Prevalence and type of traumatic injuries to the anterior teeth of pre-school children;Ferguson;Journal of Periodontics,1979
3. A follow-up study of injuries to permanent and primary teeth in children;Haavikko;Proceeding of the Finnish Dental Society,1976
4. Injured permanent incisor teeth: an epidemiological study;O'Mullane;Journal of the Irish Dental Association,1972
5. Dental injuries in 11 to 13 year old children;York;New Zealand Dental Journal,1978