Jianer Chen, Yang Liu 0002, Songjian Lu, Barry O Sullivan, Igor Razgon. A fixed-parameter algorithm for the directed feedback vertex set problem. In Richard E. Ladner, Cynthia Dwork, editors, Proceedings of the 40th Annual ACM Symposium on Theory of Computing, Victoria, British Columbia, Canada, May 17-20, 2008. pages 177-186, ACM, 2008. [doi]
Abstract is missing.