1. 4Plachta,D.W."AnUpdatedZeroBoil-OffCryogenicPropellantStorageAnalysisAppliedtoUpperStagesor Depots in an LEO Environment",NASA TM-2003-211691,2003.
2. Plachta,D.W."ResultsofanAdvancedDevelopmentZeroBoil-OffCryogenicPropellantStorageTest,"AIAA2004-3837,2004.