1. Christenson’s Introduction to the Physics of Diagnostic Radiology;Curry,1984
2. New X-ray phosphors
3. P.S. Bryan, P.M. Lambert, G.S. Jarrold, C.M. Towers, U.S. Patent No. 4,988,880, January 29, 1991.
4. P.S. Bryan, B.J. Fisher, P.M. Hoderlein,, K.E. Smith, U.S. Patent No. 5,336,893, August 9, 1994.
5. P.M. Lambert, G.S. Jarrold, P.S. Bryan, U.S. Patent No. 5,698,857, December 16, 1997.