1. Morgan J, 1990. Current and planned European operational meteorological satellite systems. Presented at the 23rd International Symposium on Remote sensing of the Environment, Bangkok, Thailand, April 18–25, 1990.
2. Brachet G, 1985. Le programme SPOT, historique, objectifs, description du système et organisation générale. Bulletin de la Société Française de Photogrammétrie et de Télédétection, no 100 (1985-4).
3. Brachet G. SPOT programme status: medium term and long term planning on the basis of market requirements. International Journal of Remote Sensing 1990;11(6).
4. Duchossois G. The ERS-1 mission. ESA Bulletin no. 65, February 1991.
5. Determination of deforestation rates of the world's humid tropical forests;Achard;Science,2002