1. Vegetation modeled as a water cloud;Attema;Radio Sci.,1978
2. Bush , T. F. Ulaby T. Metzler H. Stiles Seasonal variations of the microwave scattering properties of the deciduous trees as measured in the 1-18 GHz spectral range Lawrence, Kans. 1976
3. Carlson , N. L. Dielectric constant of vegetation at 8.5 GHz Columbus, Oh. 1967
4. Dielectric properties of heterogeneous mixtures containing water;Loor;J. Microwave Power,1968