Michael Nelson Ani Nahapetian Farinaz Koushanfar Miodrag Potkonjak SVD-Based Ghost Circuitry Detection. 221-234 2009 Information Hiding http://dx.doi.org/10.1007/978-3-642-04431-1_16 conf/ih/2009 db/conf/ih/ih2009.html#NelsonNKP09