Liu W, Peng Z and Wang T.
(2014). A resource-level parallel approach for global-routing-based routing congestion estimation and a method to quantify estimation accuracy 2014 IEEE/ACM International Conference on Computer-Aided Design (ICCAD). 10.1109/ICCAD.2014.7001381. 978-1-4799-6278-5. (389-396). http://ieeexplore.ieee.org/document/7001381/