1. Interaction of light with a plant canopy;Allen;I. Opt. Soc. Am.,1968
2. Rangeland applications;Carneggie,1983
3. Aerial photographs show range conditions;Colwell;California Agric.,1961
4. Solar and Terrestrial Radiation;Coulson,1975
5. Color for shrubs;Driscoll;Photogramm. Eng. Remote Sens.,1974