Secrets of Antigravity Propulsion: Tesla, UFOs, and Classified Aerospace TechnologyJul 10 2008by Paul A. LaViolette Ph.D.
Electrogravitics Systems: Reports on a New Propulsion MethodologyDec 1 1993by Elizabeth A. Rauscher and Thomas Valone
Mechanics and Thermodynamics of Propulsion (2nd Edition)Sep 17 1991by Philip Hill and Carl Peterson
Jet Engines: Fundamentals of Theory, Design and OperationApr 15 2010by Klaus Hunecke
The Saturn V F-1 Engine: Powering Apollo into HistoryNov 25 2008by Anthony Young