1. Rubber dam;LaPorte;Chron Omaha Dent Soc,1956
2. Evaluation of rubber dam technic;Hamstrom;J Amer Acad Gold Foil Oper,1962
3. Rubber dam, its advantages and application;Ireland;Texas Dent J,1962
4. A survey of rubber dam, part I, introduction;Wolcott;J Amer Acad Gold Foil Oper,1964
5. Statistical Inference;Walker,1953