1. Anatomy of the Head, Neck, Face and Jaws;Fried,1980
2. Swenson's Complete Dentures;Boucher,1970
3. Syllabus of Complete Dentures;Heartwell,1980
4. Complete Dentures;Appleby,1968
5. Composition and properties of a wax for lower impressions;Dirksen;J Am Dent Assoc,1939