1. Study of image evaluation techniques;Brock;Itek Corporation Interim Engineering Report,1963
2. Brightness of fine detail in air photography;Carman;J. Opt. Soc. America,1951
3. Detection and resolution in photographic systems;Carman;Ibid.,1964
4. Image quality criteria for aerial camera systems;Charman;Phot. Sci. and Eng.,1965
5. Observation satellites;Katz;Astronautics,1960