1. Occlusal Radiography;Voorhees;Dent. Radiogr. Photogr,1930
2. Necessity for Routine Roentgenographic Examination of the Edentulous Patient;Ennis;J. Oral Surg,1949
3. Dental Roentgenology;Ennis,1967
4. Roentgenology's Place in Denture Prosthesis;Williams;J. Am. Dent. Assoc,1953
5. Occlusal Radiography;Williams;Dent. Radiogr. Photogr,1954