Shigetoshi Nakatake Zohreh Karimi Taraneh Taghavi Majid Sarrafzadeh Block placement to ensure channel routability. 465-468 2007 conf/glvlsi/2007 ACM Great Lakes Symposium on VLSI http://doi.acm.org/10.1145/1228784.1228894 db/conf/glvlsi/glvlsi2007.html#NakatakeKTS07