Srivathsan Krishnamohan Nihar R. Mahapatra Increasing the energy efficiency of pipelined circuits via slack redistribution. 436-441 2005 conf/glvlsi/2005 ACM Great Lakes Symposium on VLSI http://doi.acm.org/10.1145/1057661.1057765 db/conf/glvlsi/glvlsi2005.html#KrishnamohanM05b