JenSeReal
commented
2 years ago - http://hdl.handle.net/2433/102629
- https://www.mat.univie.ac.at/~neum/ms/minimum_feedback_arc_set.pdf
- https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.47.7745&rep=rep1&type=pdf