1. Evaluation of the space disposal of defense nuclear waste—phase II;Battelle Columbus Laboratories,1979
2. The dual-expander rocket engine—key to economical space transportation;Beichel;Astron. Aeron.,1977
3. Single-stage-to-orbit propulsion: concepts and their merit;Beichel,1978
4. Nuclear waste disposal in space;Burns,1978
5. The results of studies to determine the impact of far-aft center-of-gravity locations on the design of a single-stage-to-orbit vehicle system;Freeman,1979