1. Crown and Bridge Prosthesis;Tylman,1955
2. Clinical Periodontology;Glickman,1953
3. Fundamental Principles in Correction of Occlusal Disharmony;Schuyler;J.A.D.A,1935
4. Problems in Occlusion in Periodontal and General Practice;Orban;Fort. Rev. Chicago D. Soc,1953
5. Physical Principles Underlying Periodontal Trauma;Maxwell;Illinois D. J,1939