1. Instrument for measuring spacecraft potential
2. Atmospheric O/N2ratios from photoelectron spectra
3. 4Goembel,Luke,U.S.Patent6,703,612,"LargeGeometricFactorChargedParticleSpectrometer",issued4Mar.2004.
4. 5Goembel,Luke,SpacecraftChargeMonitorNASAPhaseIISBIRContractFinalReport,11Mar.2006.