TY - RPRT TI - USGv6 test methods : general description and validation-version 2.0 AU - Nightingale, Stephen AU - Johnson, Erica AU - Winters, Timothy PY - 2009 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST SP 500-273v2 DO - 10.6028/NIST.SP.500-273v2 ER -