Fedor V. Fomin, Dimitrios M. Thilikos. A 3-Approximation for the Pathwidth of Halin Graphs. In Leo Liberti, Francesco Maffioli, editors, CTW04 Workshop on Graphs and Combinatorial Optimization, Scientific Program, Villa Vigoni, Menaggio (CO), Italy, 31st May to 2nd June 2004. pages 137-141, 2004.
Abstract is missing.