Gunnar W. Klau, Ivana Ljubic, Petra Mutzel, Ulrich Pferschy, René Weiskircher. The Fractional Prize-Collecting Steiner Tree Problem on Trees: Extended Abstract. In Giuseppe Di Battista, Uri Zwick, editors, Algorithms - ESA 2003, 11th Annual European Symposium, Budapest, Hungary, September 16-19, 2003, Proceedings. Volume 2832 of Lecture Notes in Computer Science, pages 691-702, Springer, 2003. [doi]
Abstract is missing.