Bao Liu Andrew B. Kahng Xu Xu Jiang Hu Ganesh Venkataraman A Global Minimum Clock Distribution Network Augmentation Algorithm for Guaranteed Clock Skew Yield. 24-31 2007 conf/aspdac/2007 ASP-DAC http://doi.ieeecomputersociety.org/10.1109/ASPDAC.2007.357787 db/conf/aspdac/aspdac2007.html#LiuKXHV07