1. Treatment of the fused tooth;Clem;Oral Surg,1966
2. Gemination, fusion, twinning and concrescence;Levitas;J Dent Child,1965
3. Principles and practice of oral radiologic interpretation;Worth,1975
4. Pathology of tumours of the oral tissues;Lucas,1976
5. Tooth gemination treated by endodontic therapy;Tagger;J Endodon,1975