1. Permeability and age changes in the dental tissues;Jenkins,1966
2. Retrogressive and age changes of the dental pulp;Seltzer,1965
3. Ageing in the teeth and oral tissues;Mills,1961
4. Functional and geriatric changes of the human pulp;Quigley,1973
5. Age changes in the blood supply to human teeth;Bernick;J Dent Res,1967