Comet 9P/Tempel 1 Ephemeris Development for the Deep Impact Mission (AAS 06-178)
Nonlinear Methods for the Propagation of Orbital Uncertainty (AAS 99-418)
Automated Detection of Potentially Hazardous Near-Earth Encounters (AAS 01-461)
Asteroid Close Encounters With Earth: Risk Assessment (AAS 99-461)
The Design and Navigation of the NEAR Shoemaker Landing on Eros (AAS 01-372)
Navigation for NEAR Shoemaker: The First Spacecraft to Orbit an Asteroid (AAS 01-371)