1. M. Shapiro, The Scientific Bases of Dentistry W. B. Saunders Co., Philadelphia, PA (1966)
2. American Dental Association, 211 East Chicago Ave., Chicago, Ill., 60611, Guide to Dental Materials and Devices Eighth Ed., (1976)
3. American Dental Association Specification #12 on Denture Base Polymer.
4. American Dental Association Specification #27 on Direct Restorative Materials.
5. F. F. Koblitz, S. D. Steen, and J. F. Glenn, in “Biomedical Applications of Polymers”, 97 ( H. P. Gregor, Ed., Plenum, 1975 )