BowenWH. 2013. The Stephan curve revisited. Odontology. 101(1):2–8.
2.
LefkowitzWSwayneP.1958. Normal development of tooth buds cultured in vitro. J Dent Res. 37(6):1100–1114.
3.
MillerWD. 1883. The agency of acids in the production of caries in human teeth, with comparative analysis of carious dentine and dentine softened by acids. Dent Cosmos. 25(7):337–344.
4.
StephanRM. 1943. The effect of urea in counteracting the influence of carbohydrates on the pH of dental plaques. J Dent Res. 22(1):63–71.