@article{Courcelle_2007,
    doi = {10.1016/j.jctb.2006.04.003},
    url = {https://doi.org/10.1016%2Fj.jctb.2006.04.003},
    year = {2007},
    month = {jan},
    publisher = {Elsevier {BV}},
    volume = {97},
    number = {1},
    pages = {91--126},
    author = {Bruno Courcelle and Sang-il Oum},
    title = {Vertex-minors, monadic second-order logic, and a conjecture by Seese},
    journal = {Journal of Combinatorial Theory, Series B}
}

@article{Courcelle_2007, doi = {10.1016/j.jctb.2006.04.003}, url = {https://doi.org/10.1016%2Fj.jctb.2006.04.003}, year = {2007}, month = {jan}, publisher = {Elsevier {BV}}, volume = {97}, number = {1}, pages = {91--126}, author = {Bruno Courcelle and Sang-il Oum}, title = {Vertex-minors, monadic second-order logic, and a conjecture by Seese}, journal = {Journal of Combinatorial Theory, Series B} }