1. A textbook of oral pathology;Shafer,1983
2. A study of dens in dente;Thomas;Oral Surg Oral Med Oral Pathol,1974
3. Bilateral dens invaginatus in the mandibular incisor region;Conklin;Oral Surg Oral Med Oral Pathol,1978
4. Pathology of the dental hard tissues;Pindborg,1970
5. Synopsis of oral pathology;Bhaskar,1981