1. The Comet Halley Probe Plasma Environment,1981
2. The Giotto Spacecraft Gas and Plasma Environments,1982
3. Spacecraft/Plasma Interactions and Their Influence on Field and Particle Measurements,1983
4. Interaction between a body and its environment during a cometary flyby;Grard;Adv. Space Res.,1981
5. Impact induced plasma during a cometary flyby;Grard;Adv. Space Res.,1983