| |
| | Reusable Launch Vehicles (Site not responding. Last check: 2007-10-24) |
 | | Commercial Space Transportation in the 21st Century, Technology and Environment, 2001-2025: Conference Proceedings. |
 | | Space Access and Utilization Beyond 2000: Proceedings Based on, But Not Limited to, The Symposium on "Space Access and Utilization Beyond 2000," held in Washington, D.C., 18 February, 2000, at the Annual General Assembly of the American Association for the Advancement of Science. |
 | | Space Transportation: Progress of the X-33 Reusable Launch Vehicle Program: Statement of Allen Li, Associate Director, National Security and International Affairs Division, before the Committee on Science, Subcommittee on Space and Aeronautics, House of Representatives. |
| www.hq.nasa.gov /office/hqlibrary/pathfinders/rlv.htm (786 words) |
|