1. American Standard Method for the Sensitometry of Medical X-ray Films,1953
2. American Standards Association: PH 6.1, New York, 1961.
3. Title 17, Chapter 5, Subchapter 4, Radiation Control Regulations, Group 3;California Administrative Code,1962
4. Radiation Dosage in Dental Offices;Barr;Oral Surg., Oral Med. & Oral Path,1960
5. Simplified Evaluation of Film Dosimetry Results;Bierman;Nucleonics,1962