TY - JOUR AU - Patrick, Heather AU - Germer, Thomas AU - Zarobila, Clarence AU - Cooksey, Catherine AU - Yoon, Howard C2 - Applied Optics DA - 2016-08-08 DO - https://doi.org/10.1364/AO.55.006346 LA - en M1 - 55 PB - Applied Optics PY - 2016 TI - Optical reflectance of pyrheliometer absorption cavities: progress towards SI-traceable measurements of solar irradiance ER -