Akihiro Chiyonobu Toshinori Sato Investigating heterogeneous combination of functional units for a criticality-based low-power processor architecture. 190-195 2004 conf/isict/2004 ISICT http://doi.acm.org/10.1145/1071509.1071547 db/conf/isict/isict2004.html#ChiyonobuS04