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Energy transfer processes between Tm3+ and Ho3+ in LiYF4

Ozen, Gonul.
Hampton, Va. : National Aeronautics and Space Administration, Langley Research Center ; [Springfield, Va. : National Technical Information Service, distributor, 1991] 1991

Fast risetime reverse bias pulse failures in SiC PN junction diodes

Nuedeck, Philip G., author.
Cleveland, Ohio : National Aeronautics and Space Administration, Lewis Research Center, June 1996. 1996-

Heavy doping effects in high efficiency silicon solar cells annual report for period covering June 2

Lindholm, F. A., 1936-
[Pasadena, Calif. : National Aeronautics and Space Administration, Jet Propulsion Laboratory, California Institute of Technology, 1985] 1985