1. The Pluto-Charon system;Stern,1992
2. Comparative Mapping of Pluto's Sub-Charon Hemisphere: Three Least-squares Models Based on Mutual Event Light Curves;Young,1992
3. Pluto Flyby Mission Design Concepts for Very Small and Moderate Spacecraft;Weinstein,1992
4. Microspacecraft Technology for Planetary Science Missions;Jones,1991