1. Baudoin , A. 1985 Identification of planimetric features from the metric camera Merric Camera Workshop , DFVLR, Oberpfaffenhofen. ESA SP-209 69 73
2. Baudoin , A. Ducher , G. Ducloux , J. 1975 Etude sur l'emploi de chambres photogrammétriques pour des missions de levés terrestres utilisant SPACELAB , Contract SC/69/HQ. IGN-ESRO-ESA 35
3. Dowman , I. J. 1984 Report of OEEPE Action Group on use of satellite data, May 1984 8
4. Cartographic possibilities of the SPOT and Spacelab projects;Ducher;Photogrammétric Record,1980
5. Some aspects of medium and small scale map revision at I'Institut Géographique National (IEN);Ducher;Ibid.,1982