1. Lect Notes Comput Sci;N. Ascheuer,2000
2. G. Ausiello, E. Feuerstein, S. Leonardi, L. Stougie, and M. Talamo. Algorithms for the on-line traveling salesman. Algorithmica, 1999. To appear.
3. A. Borodin and R. El-Yaniv. Online Computation and Competitive Analysis. Cambridge University Press, 1998.
4. B. Chen, A. P. A. Vestjens, and G. J. Woeginger. On-line scheduling of two-machine open shops where jobs arrive over time. Journal of Combinatorial Optimization, 1:355–365, 1997.
5. Lect Notes Comput Sci,1998