1. Image Evaluation for Aerial Photography;Brock,1970
2. Resolving power and the detection of linear detail;Charmann;Can. Surv.,1965
3. Visibility;Duntley;Appl. Opt.,1964
4. Sonnenstrahlung und Lufttrübung;Foitzik,1958
5. Photographische Optik. Akad. Verlagsges;Franke,1964