3McClure FJ, the cariostatic effect in white rats of phosphorus and calcium supplements added to the flour of bread formulas and to bread diets[J]. Nutr, 1960,72:131 -136.
4G. C. Forward, non - fluoride anticaries agents [ J ]. adv dent res, 1994, 8(2) :208 -214.
5Duke SA, Ress DA, Forward GC. Increased plaque calcium and toothpaste containing calcium glycerophosphate and sodim monofluorophosphate[ J ]. Caries Res, 1979, 13:57 - 59.
