The minimum spanning strong subdigraph problem is fixed parameter tractable

Jørgen Bang-Jensen, Anders Yeo. The minimum spanning strong subdigraph problem is fixed parameter tractable. Discrete Applied Mathematics, 156(15):2924-2929, 2008. [doi]

@article{Bang-JensenY08,
  title = {The minimum spanning strong subdigraph problem is fixed parameter tractable},
  author = {Jørgen Bang-Jensen and Anders Yeo},
  year = {2008},
  doi = {10.1016/j.dam.2007.12.003},
  url = {http://dx.doi.org/10.1016/j.dam.2007.12.003},
  researchr = {https://researchr.org/publication/Bang-JensenY08},
  cites = {0},
  citedby = {0},
  journal = {Discrete Applied Mathematics},
  volume = {156},
  number = {15},
  pages = {2924-2929},
}