1. Eriksson, A., Use of cloud motion winds at ECMWF, Proceedings 8th METEOSAT Scientific User's Meeting, EUM P 08, ISBN 92-9110-002-1, p 79.
2. The Role of Satellites in WMO Programmes in the 1980s;Johnson;World Weather Watch Planning Report No. 36,1977
3. World Meteorological Organization, Guide on the Global Observing System, WMO - No. 488.
4. World Meteorological Organization, Guide to Meteorological Instruments, Fifth edition, WMO - No. 8.