1. Advanced Earth-orbital transportation system technology;Decker;AIAA Paper L-10880,1976
2. Future Earth orbit transportation systems/technology implications;Henry;Astronautics and Aeronautics,1976
3. Advanced technology and future Earth-to-orbit transportation system;Henry,1977
4. A fully reusable horizontal-takeoff transport concept with two small turbojet boosters;Jackson;NASA-TM-74080,1977
5. An evaluation of composite propulsion for single-stage-to-orbit vehicles designed for horizontal takeoff;Martin;NASA TM-X-3554,1977