THE ELECTRIC ENGINE AS A PROPULSION SYSTEM FOR THE EXPLORATION OF SPACE
COMPARISON OF LUNAR AND MARTIAN MISSION REQUIREMENTS AND PAYLOAD CONVERSION FACTORS
A MANUAL ABORT TECHNIQUE FOR THE MIDCOURSE REGION OF A LUNAR MISSION
MAN-TO-THE-MOON AND RETURN MISSION UTILIZING LUNARSURFACE RENDEZVOUS
SOME GENERAL CONSIDERATIONS OF MANNED LUNAR RETURN MISSIONS
Some possible means of acquiring increased information return from Mars.