1. Allison, L. J., Wexler, R., Laughlin, C. R. and Bandeen, W. R. (1978) Remote sensing of the atmosphere from environmental satellites. American Society for Testing and Materials, Philadelphia, PA, Special Publication 653, pp. 58–155.
2. ASP (American Society of Photogrammetry) (1983) Manual of Remote Sensing, 2nd edn (ed. R.N. Colwell), ASP, Falls Church, VA, Vols 1 and 2.
3. Chang, T.C., Gloersen, P., Schmugge, T.,etal. (1976) Microwave emission from snow and glacier ice. J. Glaciol., 16, 23–39.
4. Choudhury, B.J. and Chang, A.T.C. (1979) Two-stream theory of reflectance of snow. IEEE Trans. Geosci. Electron., GE-17, 63–8.
5. Choudhury, B.J. and Chang, A.T.C. (1981) The albedo of snow for partially cloudy skies. Boundary-LayerMeteorol., 20, 371–89.