1. Also discussed in Chapter 16 of Introduction to Operations Research, edited by , and (John Wiley & Sons, Inc., New York, 1957), pp. 408–464.
2. Letter to the Editor—A Graphical Approach to Production Scheduling Problems
3. “The Efficient Utilization of Labor Under Conditions of Fluctuating Demand,” Industrial Scheduling edited by and (Prentice-Hall, Inc., Englewood Cliffs, New Jersey, 1963).