TY - RPRT TI - Calibration uncertainty for the NIST PMAM noise standards AU - Hati, Archita AU - Nelson, Craig AU - Ashby, Neil AU - Howe, David PY - 2012 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 250-90 DO - 10.6028/NIST.SP.250-90 ER -