1. Guideline on Prescribing Dental Radiographs for Infants, Children, Adolescents, and Persons with Special Health Care needs. AAPD Reference Manual, pp. 299-301, 2009.
2. U.S. Food and Drug Administration. Dental Radiography: Doses and Film Speed. www.fda.gov/Radiation-EmittingProducts/RadiationSafety/NationwideEvaluationofX-RayTrendsNEXT/ucm116524.htm. Accessed August 2011.
3. In Vitro Comparison of Four Different Dental X-ray Films and Direct Digital Radiography for Proximal Caries Detection
4. Radiation dose reduction in direct digital panoramic radiography