1. 2Pavli, A. J. and Conrad, E. W. "Resonance-Tube Igniter for Hydrogen-Oxygen RocketEngines,"NASATMX-1460,1967.
2. A resonance igniter for hydrogen-oxygen combustors
3. 4Phillips, B. R., and Pavli, A. J. "Resonance Tube Ignition of Hydrogen-Oxygen Mixtures,"NASATN D-6354,1971.
4. 5Rocketdyne Engineering, "Advanced Ignition Systems Final Report," N71-35152,1971.