1. Precision Attachments in Dentistry;Preiskel,1973
2. Die freind-sattel;Baer;Schiez Maselir Zahnheilh,1963
3. Die freind-sattel;Baer;Schiez Maselir Zahnheilh,1963
4. Pfeilerkinemalih and alostutzung;Hoffman;Dtsch Zahnheilh Z,1967
5. Stress Analysis of First Molar with Full Crown Preparation Using Three-dimensional Photoelasticity and the Finite Element Method;Farah,1972