1. B. Awerbuch, Y. Azar, and S. Plotkin. Throughput-competitive online routing. In 34th IEEE Symposium on Foundations of Computer Science, pages 32–40, 1993.
2. A. Baveja and A. Srinivasan. Approximation algorithms for disjoint paths and related routing and packing problems. To appear in Mathematics of Operations Research.
3. A. Borodin and R. El-Yaniv. Online computation and competitive analysis (cam-bridge university press, 1998). SIGACTN: SIGACT News (ACM Special Interest Group on Automata and Computability Theory), 29, 1998.
4. S. Fortune, J. Hopcroft, and J. Wyllie. The directed homeomorphism problem. Theoretical Computer Science, 10:111–121, 1980.
5. V. Guruswami, S. Khanna, R. Rajaraman, B. Shepherd, and M. Yannakakis. Near-optimal hardness results and approximation algorithms for edge-disjoint paths and related problems. Proc. of STOC’ 99, pages 19–28.