1. Radiation Doses in Oral Radiology;Bjarngard;Odontol. Revy,1969
2. Roentgen-ray Doses in Dental Roentgenography;Richards;J. Am. Dent. Assoc,1958
3. Integral Absorbed Dose in Conventional and Panoramic Complete Mouth Examinations;Van Aken;Oral Surg,1966
4. Ionization Chambers for Radiation Data During Dental X-ray Exposure;Hudson;USAF Med. J,1955
5. Evaluation of a Panoramic Dental X-ray Machine;Kraske;Dent. Progr,1961