Hua-Yu Chang Iris Hui-Ru Jiang Yao-Wen Chang Functional ECO Using Metal-Configurable Gate-Array Spare Cells. 191:1-191:6 2014 DAC https://doi.org/10.1145/2593069.2593145 conf/dac/2014 db/conf/dac/dac2014.html#ChangJC14