Stralfors, A.: The Bacterial Chemistry of Dental Plaques, Stockholm, A. B. Thule, 1950.
2.
Stephan, R.M. : Changes in H-ion Concentration on Tooth Surfaces and in Carious Lesions, J. A. D. A. 27: 718, 1940.
3.
Miller, B.F. , Muntz, J.A., and Bradel, S.: Decomposition of Carbohydrate Substrates by Dental Plaque Material, J. D. Res. 19: 473, 1940.
4.
Stephan. R.M. , and Hemmens, E.S.: Studies of Changes in pH Produced by Pure Cultures of Oral Microorganisms, J. D. Res.26: 15, 1947.
5.
Manly, R.S.: A Method for Study of Acid Production by Salivary Sediment, J. D. Res. 33: 561, 1954.
6.
Kraus, F.W., Casey D.W., and Johnson, V. : The Clasaification of Nonhemolytic Streptococci Recovered From Bacteremia of Dental Origin, J. D. Res.32: 613, 1953.
7.
Rogosa, M., Wiseman, R.F., Mitchell, J.A., Disraely, M.N., and Beaman, A.J.: Species Differentiation of Oral Laetobacilli From Man Including Descriptions of Lactobacillus Salivarius Nov Spec and Lactobacillus Cellobiosus Nov Spec , J. Bact. 65: 681, 1953.
8.
Stephan, R.M. : Intra-oral Hydrogen-ion Concentrations Associated With Dental Caries Activity, J. D. Res. 23: 257, 1944.
9.
Emerson, W. and Yurkstas, A.A.: Personal communication.