Improved Fixed-Parameter Algorithms for Two Feedback Set Problems.

Jiong Guo Jens Gramm Falk Hüffner Rolf Niedermeier Sebastian Wernicke Improved Fixed-Parameter Algorithms for Two Feedback Set Problems. 158-168 2005 conf/wads/2005 WADS http://dx.doi.org/10.1007/11534273_15 db/conf/wads/wads2005.html#GuoGHNW05