TY - GEN AU - Gerhart J Kneissl C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 1968-01-01 05:01:00 DO - https://doi.org/10.6028/NBS.TN.439 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 1968 TI - Laser-source integrating sphere reflectometer: ER -