5Development of the U. S. Integrated Earth Observation System: Progress and Recommendations for the Way Forward. March 2007 [R/OL]. http://usgeo, gov/docs/USGEO% 20Progress% 20Report %0202007-0321. pdf.
6Science Plan for NASA's Science Mission Directorate 2007- 2016[R/OL]. http ://science. hq. nasa. gov/strategy/Science_ Plan_07. pdf.
8Earth Observation for a Healthy, Safe and Prosperous Canada Towards a Federal Earth Observation Strategy and the Earth Observation Focus Areas [ R/OL]. http://cgeo-geot. gc. ca/documents/pall does/FEOS_EN 26052006. pdf.
9GEO 2007-2009 Work Plan Toward Convergence[R/OL]. http://www, earthobservations, org/docs/GEO 2007-2009 WorkPlan. v3. pdf.
10The Changing Earth: New Scientific Challenges for ESA's Living Planet Programme, SP-1304 [ R/OL]. http ://www. esa. int/esaLP/SEM84CVHESE index_1, html.