Foad Dabiri Miodrag Potkonjak Hardware aging-based software metering. 460-465 2009 DATE http://ieeexplore.ieee.org/xpls/abs_all.jsp?isnumber=5090609&arnumber=5090709&count=326&index=95 conf/date/2009 db/conf/date/date2009.html#DabiriP09