TY - RPRT TI - Software assurance using structured assurance case models AU - Rhodes, Thomas AU - Boland, Frederick AU - Fong, Elizabeth AU - Kass, Michael PY - 2009 PB - National Institute of Standards and Technology CY - Gaithersburg, MD SN - NIST IR 7608 DO - 10.6028/NIST.IR.7608 ER -