Behnam Amelifard Farzan Fallah Massoud Pedram Low-Power Fanout Optimization Using Multi Threshold Voltages and Multi Channel Lengths. 478-489 2009 28 IEEE Trans. on CAD of Integrated Circuits and Systems 4 http://dx.doi.org/10.1109/TCAD.2009.2013992 db/journals/tcad/tcad28.html#AmelifardFP09