1. U.S. Patent, number 4,747,678;Shafer;Optical Relay System with Magnification,1988
2. Metal Oxide Semiconductor (MOS) Technology Scaling Issues And Their Relation To Submicron Lithography
3. Handbook of Physics;Condon,1967
4. Perkin-Elmer Symposium on The Practical Application of Modulation Transfer Functions;Offner,1963
5. Introduction to the Optical Transfer function;Williams,1989