Jason Cong, Guojie Luo. Highly efficient gradient computation for density-constrained analytical placement methods. In David Z. Pan, Gi-Joon Nam, editors, Proceedings of the 2008 International Symposium on Physical Design, ISPD 2008, Portland, Oregon, USA, April 13-16, 2008. pages 39-46, ACM, 2008. [doi]
Abstract is missing.