1. The Necessity for Routine Roentgenographic Examination of the Edentulous Patient;Ennis;J. Oral Surg,1949
2. A Radiographic Survey of Edentulous Mouths;Storer;Brit. Dent. J,1957
3. Dental Structures Remaining in 1948 Edentulous Jaws: A Statistical Survey;Waggener;J. Am. Dent. A,1941
4. Roentgenographic Study of Edentulous Jaws;Edwards;J. D. Res,1951
5. Findings in Roentgenographs of Edentulous Patients;Smith;J. Am. Dent. A,1946