1. Introduction to Sequencing and Scheduling (John Wiley and sons, New York, 1974).
2. and , Theory of Scheduling (Addision Wesley, Reading, Mass 1967).
3. The Complexity of Flowshop and Jobshop Scheduling
4. A note on the influence of missing operations on scheduling problems
5. Sequencing by Enumerative Methods, (Mathematical Center, Amsterdam, 1977).