Schmid, H.Das Problem Fluorgehalt des Zahnes-Karies Resistung, Schweiz. Monatschr . Zahnheilk., 58:539,1948.
2.
Jenkins, G.N. , and Speirs, R.L.Distribution of Fluorine in Human Enamel , J. Physiol., 121:21, 1953.
3.
Brudevold, F. , Gardner, D.E., and Smith, F.A.The Distribution of F in Human Enamel, J. D. Res., 35:420, 1956.
4.
Isaac, S., Brudevold, F., Smith, F.A., and Gardner, D.E.The Relation of Fluoride in the Drinking Water to the Distribution of Fluoride in Enamel, J. D. Res., 37:318, 1958.
5.
Speirs, R.L.The Uptake, Exchange and Release of Fluoride at the Surface of Teeth, Brit. D. J., 104:347, 1958.
6.
Myers, M.H., Hamilton, J.G., and Becks, H.A Tracer Study of the Transfer of F18 to Teeth by Topical Application , J. D. Res., 31:743,1952.
7.
Brudevold, F. , Hein, J.W., Bonner , J.F., Nevin, R.B., and Bibby, B.G.Reaction of Tooth Surface with 1 ppm of Flouride as Sodium Fluoride, J. D. Res., 36:771, 1957.
8.
Hardwick, J.L. , and Fremlin, J.H.Fluoride Exchange at the Tooth Surface, J. D. Res., 36:815, 1957.
9.
Nevin, R.B., Brudevold, F., and Little, M.F.Uptake and Loss of F18 from Intact Enamel, Int. Assoc. Dent. Res., 35th General Meeting, p. 101, 1957.
10.
Manly, R.S. , and Hodge, H.C.Density and Refractive Index Studies on Dental Hard Tissues. I. Methods for Separation and Determination of Purity, J. D. Res., 18:133, 1939.
11.
Manly, R.S. , Hodge, H.C., and Ange, L.E.Density and Refractive Index Studies of Dental Hard Tissues. II. Density Distribution Curves, J. D. Res., 18:203, 1939.
12.
Willard, H.H. , and Winter, O.B.Volumetric Method for Determination of Fluoride, Ind. Eng. Chem., Anal. Ed., 5:7, 1933.
13.
Smith, F.A. , and Gardner, D.E.A Comparison of the Thorium Nitrate Back Titration and the Salt-Acid Thorium Titration for the Determination of Fluoride , Arch. Biochem., 29:311, 1950.
14.
Volker, J.F. , Hodge, H.C., Wilson , H.J., and Van Voorhis , S.N.The Adsorption of Fluorides by Enamel, Dentin, Bone and Hydroxyapatite as Shown by the Radioactive Isotope, J. Biol. Chem., 134:543, 1940.
15.
Wood, N.V., JR. Specific Surfaces of Bone, Apatite, Enamel, and Dentin, Science, 105:631, 1947.
16.
Henderick, S.B., and Hill, W.L.The Nature of Bone and Phosphate Rock, Proc . Natl. Acad. Sci., 36:731,1950.
17.
McCann, H.G. , and Bullocx , F.A.Reaction of Fluoride Ion with Powdered Enamel and Dentin, J. D. Res., 34:59, 1955.
18.
Galagan, D.J.Climate and Controlled Fluoridation, J.A.D.A., 47:159, 1953.