%0 conference paper,conference lecture %@ %A Atanassov, V.,Rosenthal, W.,Ziemer, F. %D 1992 %J The World Space Congress: 29 Plenary Meeting of the Committee of Space Research COSPAR %N %P 535-539 %T Spatial variability of two dimensional SAR Spectra within the Norwegian CAL/VAL Area of ERS-1 %U %X