1. The AMSAT mission to the asteroid belt;Meinzer;IAF Paper 83-207,1983
2. Design and navigation accuracy assessment of an ion driven asteroids flyby and rendezvous mission launched by Ariane 4 APEX demonstration flight;Eckstein;DFVLR Internal Report GSOC 83-1,1983
3. Effects of changes in spacecraft design data on mission design and navigation accuracy of the AMSAT asteroid rendezvous mission;Eckstein;DFVLR Internal Report GSOC 84-1,1984
4. Mission options for the first SEPS application;Yen;AAS/AIAA Paper 81-186,1981