Paffenbarger, G.C.Hydrocolloidal Impression Materials: Physical Properties and a Specification, J.A.D.A., 27:373, 1940.
3.
Luster, E.A.Dimensional Changes of Agar-Agar Gel on Immersion in Various Sulphate Solutions, J. D. Res., 30:281, 1951.
4.
PHILLIPS, R. W., and ITO, B. Y. Factors Influencing the Accuracy of Reversible Hydrocolloid Impressions, J.A.D.A., 43:1, 1951. SwARTz, M. L., NORMAN, R. D., GILLMORE, H. W., and PHILLIPS, R. W. Studies on Syneresis and Imbibition in Reversible Hydrocolloid, J. D. Res., 36:472, 1957.
5.
Margetis, P.M. , and Hansen, W.C.Changes in Agar-Agar Type Duplicating Material and Agar-Agar on Heating and Storage, J.A.D.A., 54:737, 1957.
6.
Paffenbarger, G.C., Stanford, J.W., and Sweeney, W.T.American Dental Association Specifications for Dental Materials, pp. 42-46. 3d ed. Chicago : A.D.A., 1958.
7.
A.S.T.M.Standards 1958, Part 9, Tear Resistance of Vulcanized Rubber, D624-54, pp. 1357-60. Philadelphia, Pa .: American Society for Testing Materials, 1958.
8.
Cresson, J.Suggested Revisions for Testing Dental Elastic Impression Materials, J. D. Res., 28:573, 1949.