title = {1.5-Approximation for treewidth of graphs excluding a graph with one crossing as a minor},
author = {Erik D. Demaine and MohammadTaghi Hajiaghayi and Dimitrios M. Thilikos},
booktitle = {Proc. 5th Int. Worksh. Approximation Algorithms for Combinatorial Optimization (APPROX 2002)},
number = {2462},
editor = {Klaus Jansen and Stefano Leonardi and Vijay V. Vazirani},
series = {Lecture Notes in Computer Science},
publisher = {Springer-Verlag},
pages = {67--80},
year = {2002},
url = {}}

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