//-->
An introduction to approximation algorithms
Rinnooy Kan, A. H. G., (1984)
OR/AI Rules for the Optimal Design of Manufacturing Systems: Machine and Trafic Allocation.
Van Vliet, M., (1992)
A Multi-Machine Flow Shop Problem with Controllable Processing Times: Worst-Case and Robustness Results.
Van Vliet, M., (1993)