Space tourism: A response to continuing decay in US civil space financial support
Preliminary Results from a Six Vehicle, Heavy Duty Truck Trial, Using Additive Regenerated DPFs
Space Settlements, Perhaps Sooner Than You Think (Keynote Address) (SDC 88-006)
"Space tourism" - its importance, its history, and a recent extraordinary development
Preliminary results from a six vehicle, heavy duty truck trial using additive regenerated DPFs