Snyder, M.L. : A Simple Colorimetric Method for the Estimation of Relative Number of Lactobacilli in the Saliva, J. D. Res . 19: 349, 1940.
2.
Rogosa, M., Mitchell, J.A., and Wiseman, R.F.: A Selective Medium for the Isolation and Enumeration of Oral Lactobacilli , J. D. Res. 30: 682, 1951.
3.
Snyder, M.L. : Laboratory Methods in the Clinical Evaluation of Caries Activity, J. A. D. A. 42: 400, 1951.
4.
Idem: Correlation and Comparison of Laboratory Findings With the Clinical Evidence of Caries Activity in a Group of Sixty-Six Children, J. A. D. A. 29: 2001, 1942 .
5.
Snyder, M.L. , and Clarke, M.K.: Evaluation of the Colorimetric (Snyder) Test, J. D. Res. 29: 298, 1950.
6.
Sullivan, J.H. , and Storvick, C.A.: Statistical Interpretation of Salivary Analysis on 555 School Children in Two Geographic Regions in Oregon, J. D. Res. 29: 173, 1950.
7.
Fitzgerald, R.J.: Preliminary Studies on the Presence of Acid Phosphatase in Certain Oral Microorganisms, J. D. Res . 31: 189, 1952.
8.
Rizzo, D.R., and Tilden, F.B.: Further Studies of a Differential Culture Technique for Estimations of Acidogenic Bacteria in Saliva, J. D. Res. 31: 825, 1952.
9.
Van Kesteren, M., and Bibby, B.G.: Acid Production by Mouth Organisms, J. D. Res. 19: 289, 1940.
10.
Young, G., Resca, H.G., and Sullivan, M.T.: The Yeasts of the Normal Mouth and Their Relation to Salivary Acidity, J. D. Res. 30: 426, 1951.
11.
Breed, R.S., Murray, E.G.D., and Hitchens, A.P.: Bergey's Manual of Determinative Bacteriology, ed. 6, Baltimore, 1948, The Williams & Wilkins Co., p. 349.