Chandra Chekuri, Klaus Jansen, José D. P. Rolim, Luca Trevisan: Approximation, Randomization and Combinatorial Optimization, Algorithms and Techniques, 8th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2005 and 9th InternationalWorkshop on Randomization and Computation, RANDOM 2005, Berkeley, CA, USA, August 22-24, 2005, Proceedings. Lecture Notes in Computer Science 3624, Springer 2005, ISBN 3-540-28239-4