Rajeev R. Rao Anirudh Devgan David Blaauw Dennis Sylvester 1685-1695 2006 25 IEEE Trans. on CAD of Integrated Circuits and Systems 9 http://doi.ieeecomputersociety.org/10.1109/TCAD.2005.858351 db/journals/tcad/tcad25.html#RaoDBS06