TY - RPRT TI - Trajectory Propagation Models and Operational Software Comparison Between JPL and GSFC/FDF for TOPEX/POSEIDON AU - Salama, Ahmed AU - Nemesure, Michael AU - Guinn, Joe AU - Bolvin, Dave AU - Leavitt, Robert PY - 1994 UR - https://ntrs.nasa.gov/citations/20060039643 ID - 20060039643 ER -