Paul N. Estey

Large-scale hybrid motor performance and designs for use in launch vehicle applications

Kirk J. Flittie, Paul N. Estey, 1993 .

Hybrid rockets - Combining the best of liquids and solids

Paul N. Estey, Jerry R. Cook, Ben E. Goldberg, 1992 .

The Aquila launch vehicle: A hybrid propulsion space booster

Kirk J. Flittie, Paul N. Estey, R.Jay Kniffen, 1991 .