Dorit S. Hochbaum, Klaus Jansen, José D. P. Rolim, Alistair Sinclair: Randomization, Approximation, and Combinatorial Algorithms and Techniques, Third International Workshop on Randomization and Approximation Techniques in Computer Science, and Second International Workshop on Approximation Algorithms for Combinatorial Optimization Problems RANDOM-APPROX'99, Berkeley, CA, USA, August 8-11, 1999, Proceedings. Lecture Notes in Computer Science 1671, Springer 1999, ISBN 3-540-66329-0