MEMPHIS-a fully polarimetric experimental radar. - Hartmut Schimpf; Helmut Essen; Stephan Boehmsdorff; Thorsten Brehm (IGARSS, 2002)

On the scattering mechanism of power lines at millimeter-waves. - Helmut Essen; Stephan Boehmsdorff; Gregor Biegel; Alfred Wahlen (IEEE Trans. Geosci. Remote. Sens., 2002)