Yiyu Shi Tong Jing Lei He Zhe Feng 0002 Xianlong Hong CDCTree: novel obstacle-avoiding routing tree construction based on current driven circuit model. 630-635 2006 conf/aspdac/2006 ASP-DAC http://doi.acm.org/10.1145/1118299.1118447 db/conf/aspdac/aspdac2006.html#ShiJHFH06