@article{ontheparameterizedcomplexityofpolytree,
  title = {On the Parameterized Complexity of Polytree Learning},
  author = {Niels Grüttemeier and Christian Komusiewicz and Nils Morawietz},
  year = {2021},
  eprint = {2105.09675},
  archivePrefix = {arXiv},
  url = {https://arxiv.org/abs/2105.09675v1},
}