Spacecraft studies of planetary surfaces using bistatic radar. - Richard A. Simpson (IEEE Trans. Geosci. Remote. Sens., 1993)

Polarization in Bistatic Radar Probing of Planetary Surfaces: Application to Mars Express Data. - Richard A. Simpson; G. Leonard Tyler; Martin Pätzold; Bernd Häusler; Sami W. Asmar; Ahmed K. Sultan-Salem (Proc. IEEE, 2011)