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2. L. D. Kaplan , J. Optic. Soc. Amer. 49 , 1004 ( 1959 ).
3. During the past decade the National Environmental Satellite Center (formerly part of the Weather Bureau) has developed with the cooperation of NASA the SIRS instrument and the means of deducing the temperattlre profiles from the radiances.
4. M. G. Dreyfus , Appl. Optics 1 , 615 ( 1962 ).
5. S. N. Koblick , EEE Circuit Design Engineering 13 , 54 ( 1965 ).