Rother, Martin CHAMP, Deutsches GeoForschungsZentrum; 2.3 Earth's Magnetic Field, 2.0 Physics of the Earth, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;
http://op.gfz-potsdam.de/champ/more/docs_CHAMP.html (Supplementary material)
CH-FGM-DATA-FORMAT.pdf (Publisher version), 29KB
Rother, M. (2001): CHAMP Fluxgate Magnetometer Data Description (CDF), Potsdam : Deutsches GeoForschungsZentrum, 10 p.