1. H. Rubens and E. Aschkinass, “Beobachtungen uber Absorption und Emission von Wasserdampf und Kohlensaure im Ultraroten Spectrum,” Ann. Phys. (New York) 300, 584–601 (1898).
2. G. Hettner, “Uber das Ultrarote Absorptionsspektrum des Wasserdampfes,” Ann. Phys. (New York) 360, 476–496 (1918).
3. W. M. Elsasser, “Far infrared absorption of atmospheric water vapor,” Astrophys. J. 87, 497–507 (1938).
4. D. E. Burch, Investigation of the absorption of infrared radiation by atmospheric gases. Semiannual Technical Report N U-4784 (Aeronutronic Division, Philco Ford Corporation, 1971).
5. K. J. Bignell, “The water-vapour infra-red continuum,” Q. J. R. Meteorol. Soc. 96, 390–403 (1970).