@article{Bienstock_1991,
    doi = {10.1016/0095-8956(91)90068-u},
    url = {https://doi.org/10.1016%2F0095-8956%2891%2990068-u},
    year = {1991},
    month = {jul},
    publisher = {Elsevier {BV}},
    volume = {52},
    number = {2},
    pages = {274--283},
    author = {Dan Bienstock and Neil Robertson and Paul Seymour and Robin Thomas},
    title = {Quickly excluding a forest},
    journal = {Journal of Combinatorial Theory, Series B}
}

@article{Bienstock_1991, doi = {10.1016/0095-8956(91)90068-u}, url = {https://doi.org/10.1016%2F0095-8956%2891%2990068-u}, year = {1991}, month = {jul}, publisher = {Elsevier {BV}}, volume = {52}, number = {2}, pages = {274--283}, author = {Dan Bienstock and Neil Robertson and Paul Seymour and Robin Thomas}, title = {Quickly excluding a forest}, journal = {Journal of Combinatorial Theory, Series B} }