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2. AVISO User Handbook, Merged TOPEX/Poseidon Products (GDR's), Edition 2.1.
3. Global Non-Dynamic Improvement for Altimetric Satellites;Sandwell;J. Geophs. Res.,1986
4. On Using Precise Laser Ranges to Provide Vertical Control for Satellite Altimetric Surfaces;Wagner;Manu. Geod.,1989
5. Orbital Refinement of ERS-1 using Dual Crossover Arc Techniques with TOPEX/Poseidon;Moore;Manu. Geod.,1993