TY - JOUR AU - Brown, Steven AU - Eppeldauer, George AU - Rice, Joseph AU - Zhang, Jun AU - Lykke, Keith C2 - SPIE proceedings series DA - 2004-01-01 LA - en M1 - 5542 PB - SPIE proceedings series PY - 2004 TI - Spectral Irradiance and Radiance Responsivity Calibrations Using Uniform Sources (SIRCUS) Facility at NIST ER -