Takashi Doi, Toshihiro Fujito. A Primal-Dual Method for Approximating Tree Cover with Two Weights. 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 119-123, 2004.
Abstract is missing.