Arkadev Chattopadhyay, Jeff Edmonds, Faith Ellen, Toniann Pitassi. A little advice can be very helpful. In Yuval Rabani, editor, Proceedings of the Twenty-Third Annual ACM-SIAM Symposium on Discrete Algorithms, SODA 2012, Kyoto, Japan, January 17-19, 2012. pages 615-625, SIAM, 2012. [doi]
Abstract is missing.