1. Karies in Vergangenheit und Gegenwart: zur Epidemiologie einer «Volksseuche»;Alt,2001
2. The macroscopic dental pathology of some earlier human populations;Brothwell,1963
3. Caries – ancient plague of humankind;Caselitz,1998
4. Periodontal diseases in ancient populations;Clarke;Am J Phys Anthrop,1986
5. Notes on settlement patterns in traditional Oman;Costa;J Oman Studies,1980