Heymsfield, G. A. and R. Fulton. 1992. Modulation of SSM/I microwave soil radiances by rainfall. Remote Sensing of Environment. 29:187-202.
Hollinger, J. P., J. L. Peirce, and G. A. Poe. 1990. SSM/I instrument evaluation. IEEE Trans. on Geoscience and Remote Sensing, 28:781-790.
Jackson, T. J. 1997. Soil moisture estimation using SSM/I satellite data over a grass land region. Water Resources Research. 33:1475-1484.
Teng, W. L., J. R. Wang, and P. C. Doraiswamy. 1993. Relationship between satellite microwave radiometric data, antecedent precipitation index, and regional soil moisture. Int. J. of Remote Sensing. 14:2483-2500.