1. Bork K, Hoede N, Korting GW et al. (1996) Diseases of the oral mucosa and lips. Saunders, Philadelphia
2. Gartner LP (1994) Oral anatomy and tissue types. Semin Dermatol 13:68–73
3. Hornstein OP (1996) Erkrankungen des Mundes. Kohlhammer, Stuttgart
4. Lotti TM, Parish LC, Rogers RS (eds) (1998) Oral diseases. Textbook and atlas. Springer. Berlin
5. Scully C, Flint SR, Porter SR (eds) (1996) Oral diseases. An illustrated guide to diagnosis and management, 2nd edn. Dunitz, London