TY - GEN AU - L M Hanssen AU - S G Kaplan C2 - , National Institute of Standards and Technology, Gaithersburg, MD DA - 2001-01-01 05:01:00 DO - https://doi.org/10.6028/NIST.SP.260-123 LA - en PB - , National Institute of Standards and Technology, Gaithersburg, MD PY - 2001 TI - Standard Reference Materials ::Infrared transmittance standards - SRMs 2053, 2054, 2055, and 2056/ ER -