Mikhail Popovich Eby G. Friedman Michael Sotman Avinoam Kolodny On-chip power distribution grids with multiple supply voltages for high performance integrated circuits. 2-7 2005 conf/glvlsi/2005 ACM Great Lakes Symposium on VLSI http://doi.acm.org/10.1145/1057661.1057665 db/conf/glvlsi/glvlsi2005.html#PopovichFSK05