TY  - JOUR
AU  - Johnson, Bettye
AU  - Litorja, Maritoni
AU  - Butler, James
C2  - SPIE
DA  - 2003-01-01
LA  - en
M1  - 5151
PB  - SPIE
PY  - 2003
TI  - Preliminary Results of Aperture Area Comparison for Exo-Atmospheric Solar Irradiance
ER  -