TY - JOUR AU - Steven Brown AU - George Eppeldauer AU - Joseph Rice AU - Jun Zhang AU - Keith Lykke 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 -