Jason Cong Honching Peter Li Sung Kyu Lim Toshiyuki Shibuya Dongmin Xu Large scale circuit partitioning with loose/stable net removal and signal flow based clustering. 441-446 1997 ICCAD http://doi.acm.org/10.1145/266388.266524 db/conf/iccad/iccad1997.html#CongLLSX97