Annual Report for 1967 to the Council of Europe
Optimization of the Ascent Trajectory of a 4-Stage Launching Vehicle for Geosynchronous Missions
European Industry and Space 1970 - Assessment of U S- Europe Cooperation
Thoughts on Transfer to Geostationary Orbit by Ion Propulsion-Application to the Europa 3 Launcher
Evaluation of Development Costs and Possibilities of Direct Television Satellites
Illumination of a Low Satellite in an Elliptic Orbit
NASA’s Space Launch System: Enabling a New Generation of Lunar Exploration