Article Title,Year,Volume,Issue,Page Range,Author
The effect of traumatic injuries to primary teeth on their permanent successors. II. A clinical and radiographic follow-up study of 213 teeth,1971,79,4,284-294,Ravn
Enamel changes in permanent teeth after trauma to their primary predecessors,1973,81,3,203-209,Andreasen
Follow-up study of permanent incisors with enamel fractures as a result of an acute trauma,1981,89,3,213-217,Ravn