@article{Fomin_2007,
    doi = {10.1007/s00224-007-2007-x},
    url = {https://doi.org/10.1007%2Fs00224-007-2007-x},
    year = {2007},
    month = {aug},
    publisher = {Springer Science and Business Media {LLC}},
    volume = {41},
    number = {2},
    pages = {381--393},
    author = {Fedor V. Fomin and Pinar Heggernes and Dieter Kratsch},
    title = {Exact Algorithms for Graph Homomorphisms},
    journal = {Theory of Computing Systems}
}

@article{Fomin_2007, doi = {10.1007/s00224-007-2007-x}, url = {https://doi.org/10.1007%2Fs00224-007-2007-x}, year = {2007}, month = {aug}, publisher = {Springer Science and Business Media {LLC}}, volume = {41}, number = {2}, pages = {381--393}, author = {Fedor V. Fomin and Pinar Heggernes and Dieter Kratsch}, title = {Exact Algorithms for Graph Homomorphisms}, journal = {Theory of Computing Systems} }