1. Roentgenographic Evaluation of Alveolar Bone Changes in Periodontal Disease;Patur,1960
2. A Comparison Between Anatomical and Radiographic Interpretation of Marginal Periodontal Disease;Fröhlich;Paradontal,1958
3. Origin of Registration of the Architectural Pattern, the Lamina Dura, and the Alveolar Crest in the Dental Radiograph;Goldman;Oral Surg., Oral Med. & Oral Path,1957
4. X-ray Technic and Interpretation of Dental Roentgenograms;Greenfield,1938
5. A Correlation Between Periodontal Disease and Caries;Miller;J. D. Res,1940