Ulrich Pferschy, Joachim Schauer. Approximating the Quadratic Knapsack Problem on Special Graph Classes. In Christos Kaklamanis, Kirk Pruhs, editors, Approximation and Online Algorithms - 11th International Workshop, WAOA 2013, Sophia Antipolis, France, September 5-6, 2013, Revised Selected Papers. Volume 8447 of Lecture Notes in Computer Science, pages 61-72, Springer, 2013. [doi]
Abstract is missing.