Markus Chimani, Maria Kandyba, Petra Mutzel. A New ILP Formulation for 2-Root-Connected Prize-Collecting Steiner Networks. In Lars Arge, Michael Hoffmann, Emo Welzl, editors, Algorithms - ESA 2007, 15th Annual European Symposium, Eilat, Israel, October 8-10, 2007, Proceedings. Volume 4698 of Lecture Notes in Computer Science, pages 681-692, Springer, 2007. [doi]
Abstract is missing.