TY - GEN AU - Nadal, Maria E AU - Early, Edward A AU - Bousquet, Robert R C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2008-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.250-71 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2008 TI - 0 ::45 surface color ER -