References
- U.S. Public Health Service . March 1966 . March , DRH, SAB, Medical X-Ray Program, Unpublished Data
- Miller , T. W. 1964 . Progress in Dental Radiological Health . Radiological Health Data , 5 Oct. : 499
- General Electric Corp. 1966 . New Jobs for Coolidge Tube. The Monogram . Campus Digest Edition , : 20 – 21 .