Approximation, Randomization, and Combinatorial Optimization. Algorithms and Techniques 7th International Workshop on Approximation Algorithms for Combinatorial Optimization Problems, APPROX 2004, and 8th International Workshop on Randomization and Computation, RANDOM 2004, Cambridge, MA, USA, August 22-24, 2004. Proceedings - Jansen, Klaus; Khanna, Sanjeev; Rolim, José D. P.; Ron, Dana (Springer Berlin Heidelberg, 2004)