Barber D. G., and LeDrew E. F. “Modeling Synthetic Aperture Radar (SAR) Scattering from a Seasonally Varying Snow-Covered Sea Ice Volume at 5.3 and 9.25 GHz”. Polar Research, vol. 13, no. 1, Jan. 1994, pp. 35-54, doi:10.3402/polar.v13i1.6679.