Ashish Goel, Klaus Jansen, José D. P. Rolim, Ronitt Rubinfeld: Approximation, Randomization and Combinatorial Optimization. Algorithms and Techniques, 11th International Workshop, APPROX 2008, and 12th International Workshop, RANDOM 2008, Boston, MA, USA, August 25-27, 2008. Proceedings. Lecture Notes in Computer Science 5171, Springer 2008, ISBN 978-3-540-85362-6