Daniel Bienstock, Neil Robertson, Paul D. Seymour, Robin Thomas. Quickly excluding a forest. Journal of Combinatorial Theory, Series A, 52(2):274-283, 1991. [doi]
@article{BienstockRST91, title = {Quickly excluding a forest}, author = {Daniel Bienstock and Neil Robertson and Paul D. Seymour and Robin Thomas}, year = {1991}, doi = {10.1016/0095-8956(91)90068-U}, url = {http://dx.doi.org/10.1016/0095-8956(91)90068-U}, researchr = {https://researchr.org/publication/BienstockRST91}, cites = {0}, citedby = {0}, journal = {Journal of Combinatorial Theory, Series A}, volume = {52}, number = {2}, pages = {274-283}, }