Koch, K.R. External Organizations; Publikationen aller ICGEM-unterstützten Projekte, Deutsches GeoForschungsZentrum;
Koch, K. (1974): Earth’s Gravity Field and Station Coordinates from Doppler Data, Satellite Triangulation, and Gravity Anomalies, (NOAA technical report / U.S. Department of Commerce, National Oceanic and Atmospheric Administration. National Environmental Satellite Service series), Rockville, Md. : National Oceanic and Atmospheric Administration, 29 p.