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2. A Roentgenographic Aid for Oral Surgery;Grimm;Oral Surg., Oral Med. & Oral Path,1954
3. Radiographic Incrementation;Patterson;Oral Surg., Oral Med. & Oral Path,1956
4. Characteristics and Applications of X-ray Grids,1962
5. Grenzen und Täuschungen bei der röntgenologischen Darstellung marginaler Zahnbetterkrankungen;Fröhlich;Deutsche Zahn. Ztschr,1956