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[2] "IMR, Imaging Microwave Radiometer Phase A Study," ESA Document Ref. ESS/SS 1006, 1980.

[3] Hollinger, J. P., and R. C. Lo, SSM/I Project Summary Report, NRL Memorandum Report 5055, Naval Research Lab., 1983.

[4] Skou, N., "Measurement of Small Antenna Reflector Losses for Radiometer Calibration Budget," IEEE Trans. on Geoscience and Remote Sensing, Vol. 35, No. 4, 1997, pp. 967 971.