1. Coakley, J. A. and D. G. Baldwin (1984), Towards the Objective Analysis of Clouds from Satellite Imagery DataJ. Climate Appl. Meteor 23: 1065–1099.
2. Hunt, G. E. (1973), Radiative properties of terrestrial clouds at visible and infrared thermal window wavelengths,Q. J. R. Meteorol. Soc.,99: 346–369.
3. Kitting, R. L. and D. A. Langrebe, Classification of Multispectral Image Data by Extraction and Classification of Homogeneous Objects, Trans.GE-14, 10.
4. Liljas, E. (1982), Automated Techniques for the Analysis of Satellite Cloud Imagery.Nowcasting, K. A. Browning, Academic Press, 177–190.
5. Liljas, E. (1986), Use of the AVHRR 3.7 Micrometer Channel in Multispectral Cloud Classification, SMHI.